🔧 ci: update release trigger to match tags without v prefix

Add `tmuxido --update` command to update binary from latest release.
- New `self_update` module with version comparison
- Atomic binary replacement with backup/rollback
- Fetches latest release from Gitea API
- Downloads correct binary for system architecture

.claude/settings.json

@@ -0,0 +1,16 @@
+{
+  "hooks": {
+    "PostToolUse": [
+      {
+        "matcher": "Write|Edit",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "bash -c 'if [ -f Cargo.toml ]; then if command -v cargo-nextest >/dev/null 2>&1; then cargo nextest run 2>&1; else cargo test 2>&1; fi; fi'",
+            "timeout": 120
+          }
+        ]
+      }
+    ]
+  }
+}

.dockerignore

@@ -0,0 +1,3 @@
+target/
+.git/
+.claude/

.drone.yml

@@ -1,10 +1,59 @@
 kind: pipeline
 type: docker
+name: ci
+
+trigger:
+  event:
+    - push
+    - pull_request
+
+steps:
+  - name: test
+    image: rust:latest
+    commands:
+      - cargo fmt --check
+      - cargo clippy -- -D warnings
+      - cargo test
+
+  - name: coverage
+    image: xd009642/tarpaulin
+    privileged: true
+    environment:
+      GITEA_TOKEN:
+        from_secret: gitea_token
+    commands:
+      - |
+        apt-get update -qq && apt-get install -y -qq jq curl
+        PCT=$(cargo tarpaulin 2>&1 | awk '/coverage,/{print int($1)}')
+        [ -z "$PCT" ] && PCT=0
+        if [ "$PCT" -ge 80 ]; then FILL="#4c1"
+        elif [ "$PCT" -ge 60 ]; then FILL="#dfb317"
+        else FILL="#e05d44"; fi
+        echo "PCT=$PCT FILL=$FILL"
+        printf '<svg xmlns="http://www.w3.org/2000/svg" width="120" height="20"><rect width="76" height="20" fill="#555"/><rect x="76" width="44" height="20" fill="%s"/><g fill="#fff" text-anchor="middle" font-family="sans-serif" font-size="11"><text x="38" y="14">coverage</text><text x="98" y="14">%s%%</text></g></svg>' "$FILL" "$PCT" > coverage.svg
+        CONTENT=$(base64 coverage.svg | tr -d '\n')
+        SHA=$(curl -s -H "Authorization: token $GITEA_TOKEN" \
+          "https://git.cincoeuzebio.com/api/v1/repos/cinco/Tmuxido/contents/coverage.svg?ref=badges" \
+          | jq -r '.sha')
+        jq -n --arg msg "ci: update coverage badge [CI SKIP]" \
+          --arg content "$CONTENT" --arg sha "$SHA" --arg branch "badges" \
+          '{message: $msg, content: $content, sha: $sha, branch: $branch}' \
+        | curl -fsSL -X PUT \
+          -H "Authorization: token $GITEA_TOKEN" \
+          -H "Content-Type: application/json" \
+          "https://git.cincoeuzebio.com/api/v1/repos/cinco/Tmuxido/contents/coverage.svg" \
+          -d @-
+
+---
+kind: pipeline
+type: docker
 name: release
 
 trigger:
   event:
     - tag
+  ref:
+    - refs/tags/[0-9]*
 
 steps:
   - name: build-x86_64
@@ -27,11 +76,19 @@ steps:
     commands:
       - apk add --no-cache curl jq
       - |
+        # Read DRONE_TAG via ENVIRON inside awk to avoid Drone's ${VAR} substitution
+        # which would replace ${TAG} with an empty string before the shell runs.
+        BODY=$(awk '
+          BEGIN { tag = ENVIRON["DRONE_TAG"] }
+          /^## \[/ { in_section = (index($0, "[" tag "]") > 0); next }
+          in_section && /^## \[/ { exit }
+          in_section { print }
+        ' CHANGELOG.md)
         RELEASE_ID=$(curl -fsSL -X POST \
           -H "Authorization: token $GITEA_TOKEN" \
           -H "Content-Type: application/json" \
           "https://git.cincoeuzebio.com/api/v1/repos/cinco/Tmuxido/releases" \
-          -d "{\"tag_name\":\"$DRONE_TAG\",\"name\":\"$DRONE_TAG\",\"body\":\"Release $DRONE_TAG\"}" \
+          -d "{\"tag_name\":\"$DRONE_TAG\",\"name\":\"$DRONE_TAG\",\"body\":$(echo "$BODY" | jq -Rs .)}" \
           | jq -r .id)
         for ASSET in tmuxido-x86_64-linux tmuxido-aarch64-linux; do
           curl -fsSL -X POST \

.mcp.json

@@ -0,0 +1,24 @@
+{
+  "mcpServers": {
+    "rust-mcp": {
+      "type": "stdio",
+      "command": "rust-mcp-server",
+      "args": []
+    },
+    "crates": {
+      "type": "stdio",
+      "command": "crates-mcp",
+      "args": []
+    },
+    "drone-ci-mcp": {
+      "command": "npx",
+      "args": [
+        "-y",
+        "drone-ci-mcp",
+        "--access-token=${DRONE_TOKEN}",
+        "--server-url=https://drone.cincoeuzebio.com"
+      ]
+    }
+  }
+}
+

CHANGELOG.md

@@ -0,0 +1,63 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
+
+## [0.4.0] - 2026-03-01
+
+### Added
+- Self-update feature (`tmuxido --update`) to update binary from latest GitHub release
+- New `self_update` module with version comparison and atomic binary replacement
+- `--update` CLI flag for in-place binary updates
+- Backup and rollback mechanism if update fails
+
+## [0.3.0] - 2026-03-01
+
+### Added
+- Dependency check for `fzf` and `tmux` at startup, before any operation
+- Automatic Linux package manager detection (apt, pacman, dnf, yum, zypper, emerge, xbps, apk)
+- Interactive installation prompt when required tools are missing
+- `deps` module with injectable `BinaryChecker` trait for unit testing without hitting the real system
+- Integration tests in `tests/deps.rs` (11 tests using real `SystemBinaryChecker`)
+- Docker test suite in `tests/docker/` with 15 scenarios simulating a fresh Ubuntu 24.04 user
+
+### Fixed
+- Release pipeline `publish` step now reads `DRONE_TAG` via awk `ENVIRON` to prevent Drone's
+  `${VAR}` substitution from wiping local shell variables before the shell runs
+
+## [0.2.4] - 2026-03-01
+
+### Fixed
+- Coverage percentage calculation in CI (correct field from tarpaulin JSON output)
+- Release pipeline trigger now matches `v*` tag format instead of `[0-9]*`
+
+## [0.2.2] - 2026-02-28
+
+### Added
+- Coverage badge generated by `cargo-tarpaulin` in CI, hosted in Gitea Generic Package Registry
+- CI status, coverage, version, and Rust edition badges in README
+
+## [0.2.1] - 2026-02-28
+
+### Added
+- Drone CI pipeline (`ci`) running `cargo fmt --check`, `cargo clippy`, and `cargo test` on every push and pull request
+
+## [0.2.0] - 2026-02-28
+
+### Added
+- Unit tests for `cache`, `session`, and `config` modules
+- Integration tests for scan, session config, and cache lifecycle
+
+### Changed
+- Refactored business logic into `lib.rs` for better testability; `main.rs` is now a thin entrypoint
+
+## [0.1.1] - 2026-02-28
+
+### Fixed
+- Removed personal path references from default configuration and examples
+
+## [0.1.0] - 2026-02-28
+
+### Added
+- Initial release of tmuxido

CLAUDE.md

@@ -0,0 +1,121 @@
+# Rust Project — Claude Instructions
+
+## Mandatory Rules
+
+1. **Always write tests** alongside production code — no feature ships without tests
+2. **Always verify tests pass** after every change — the PostToolUse hook runs automatically;
+   if it shows failures, fix them before moving on
+3. Run `cargo clippy -- -D warnings` and resolve all warnings
+4. Run `cargo fmt` before considering any task complete
+
+## Available MCP Tools
+
+Install with `curl -sSf https://raw.githubusercontent.com/USUARIO/claude-rust-scaffold/main/install.sh | sh`
+
+| Server | Tools | Purpose |
+|--------|-------|---------|
+| `rust-mcp` | `cargo_check`, `cargo_build`, `cargo_test`, `cargo_clippy`, `cargo_fmt`, `cargo_add` | Run cargo commands directly |
+| `crates` | search, versions, dependencies, docs | Explore crates.io and docs.rs |
+
+## Test Structure
+
+### Unit Tests — inside `src/`
+
+Place at the bottom of each source file:
+
+```rust
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn should_return_error_when_input_is_empty() {
+        // arrange
+        let input = "";
+        // act
+        let result = parse(input);
+        // assert
+        assert!(result.is_err());
+    }
+}
+```
+
+- Name tests descriptively: `should_<outcome>_when_<condition>`
+- Cover: happy path, edge cases (empty, max values), error cases
+
+### Integration Tests — `tests/` directory
+
+- One file per feature or behavior
+- Use only public interfaces (`pub`)
+- Simulate real usage end-to-end
+
+```rust
+// tests/parsing.rs
+use tmuxido::parse;
+
+#[test]
+fn parses_valid_input_successfully() {
+    let result = parse("valid input");
+    assert!(result.is_ok());
+}
+```
+
+### Snapshot Testing with `insta`
+
+For complex outputs or large structs:
+
+```rust
+#[test]
+fn renders_report_correctly() {
+    let report = generate_report(&data);
+    insta::assert_snapshot!(report);
+}
+```
+
+Review snapshots: `cargo insta review`
+
+### Property Testing with `proptest`
+
+For pure functions over wide input domains:
+
+```rust
+use proptest::prelude::*;
+
+proptest! {
+    #[test]
+    fn round_trip_encode_decode(s in ".*") {
+        let encoded = encode(&s);
+        prop_assert_eq!(decode(&encoded), s);
+    }
+}
+```
+
+## Recommended `Cargo.toml` dev-dependencies
+
+```toml
+[dev-dependencies]
+proptest = "1"
+insta = { version = "1", features = ["json", "yaml"] }
+mockall = "0.13"
+
+# if async:
+tokio = { version = "1", features = ["full", "test-util"] }
+```
+
+## Recommended Project Structure
+
+```
+tmuxido/
+├── Cargo.toml
+├── src/
+│   ├── lib.rs          # core logic (unit tests at bottom)
+│   ├── main.rs         # entrypoint (thin, delegates to lib)
+│   └── module/
+│       └── mod.rs      # #[cfg(test)] mod tests {} at bottom
+├── tests/
+│   └── integration.rs  # integration tests
+└── benches/
+    └── bench.rs        # benchmarks (optional)
+```
+
+Prefer `lib.rs` + `main.rs` split so logic stays testable independently of the binary entrypoint.

Cargo.lock

@@ -164,6 +164,28 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
 
+[[package]]
+name = "errno"
+version = "0.3.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
+dependencies = [
+ "libc",
+ "windows-sys 0.61.2",
+]
+
+[[package]]
+name = "fastrand"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37909eebbb50d72f9059c3b6d82c0463f2ff062c9e95845c43a6c9c0355411be"
+
+[[package]]
+name = "foldhash"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9c4f5dac5e15c24eb999c26181a6ca40b39fe946cbe4c263c7209467bc83af2"
+
 [[package]]
 name = "getrandom"
 version = "0.2.16"
@@ -175,6 +197,28 @@ dependencies = [
  "wasi",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "139ef39800118c7683f2fd3c98c1b23c09ae076556b435f8e9064ae108aaeeec"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "r-efi",
+ "wasip2",
+ "wasip3",
+]
+
+[[package]]
+name = "hashbrown"
+version = "0.15.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
+dependencies = [
+ "foldhash",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.16.0"
@@ -187,6 +231,12 @@ version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
+[[package]]
+name = "id-arena"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d3067d79b975e8844ca9eb072e16b31c3c1c36928edf9c6789548c524d0d954"
+
 [[package]]
 name = "indexmap"
 version = "2.12.0"
@@ -194,7 +244,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6717a8d2a5a929a1a2eb43a12812498ed141a0bcfb7e8f7844fbdbe4303bba9f"
 dependencies = [
  "equivalent",
- "hashbrown",
+ "hashbrown 0.16.0",
+ "serde",
+ "serde_core",
 ]
 
 [[package]]
@@ -209,6 +261,12 @@ version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4a5f13b858c8d314ee3e8f639011f7ccefe71f97f96e50151fb991f267928e2c"
 
+[[package]]
+name = "leb128fmt"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09edd9e8b54e49e587e4f6295a7d29c3ea94d469cb40ab8ca70b288248a81db2"
+
 [[package]]
 name = "libc"
 version = "0.2.177"
@@ -225,12 +283,30 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "linux-raw-sys"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df1d3c3b53da64cf5760482273a98e575c651a67eec7f77df96b5b642de8f039"
+
+[[package]]
+name = "log"
+version = "0.4.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5e5032e24019045c762d3c0f28f5b6b8bbf38563a65908389bf7978758920897"
+
 [[package]]
 name = "memchr"
 version = "2.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f52b00d39961fc5b2736ea853c9cc86238e165017a493d1d5c8eac6bdc4cc273"
 
+[[package]]
+name = "once_cell"
+version = "1.21.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
+
 [[package]]
 name = "once_cell_polyfill"
 version = "1.70.2"
@@ -243,6 +319,16 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
 
+[[package]]
+name = "prettyplease"
+version = "0.2.37"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "479ca8adacdd7ce8f1fb39ce9ecccbfe93a3f1344b3d0d97f20bc0196208f62b"
+dependencies = [
+ "proc-macro2",
+ "syn",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.103"
@@ -261,13 +347,19 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "r-efi"
+version = "5.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
+
 [[package]]
 name = "redox_users"
 version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ba009ff324d1fc1b900bd1fdb31564febe58a8ccc8a6fdbb93b543d33b13ca43"
 dependencies = [
- "getrandom",
+ "getrandom 0.2.16",
  "libredox",
  "thiserror 1.0.69",
 ]
@@ -278,11 +370,24 @@ version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a4e608c6638b9c18977b00b475ac1f28d14e84b27d8d42f70e0bf1e3dec127ac"
 dependencies = [
- "getrandom",
+ "getrandom 0.2.16",
  "libredox",
  "thiserror 2.0.17",
 ]
 
+[[package]]
+name = "rustix"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "146c9e247ccc180c1f61615433868c99f3de3ae256a30a43b49f67c2d9171f34"
+dependencies = [
+ "bitflags",
+ "errno",
+ "libc",
+ "linux-raw-sys",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "ryu"
 version = "1.0.20"
@@ -298,6 +403,12 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "semver"
+version = "1.0.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d767eb0aabc880b29956c35734170f26ed551a859dbd361d140cdbeca61ab1e2"
+
 [[package]]
 name = "serde"
 version = "1.0.228"
@@ -376,6 +487,19 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "tempfile"
+version = "3.25.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0136791f7c95b1f6dd99f9cc786b91bb81c3800b639b3478e561ddb7be95e5f1"
+dependencies = [
+ "fastrand",
+ "getrandom 0.4.1",
+ "once_cell",
+ "rustix",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "thiserror"
 version = "1.0.69"
@@ -418,7 +542,7 @@ dependencies = [
 
 [[package]]
 name = "tmuxido"
-version = "0.1.0"
+version = "0.4.0"
 dependencies = [
  "anyhow",
  "clap",
@@ -426,6 +550,7 @@ dependencies = [
  "serde",
  "serde_json",
  "shellexpand",
+ "tempfile",
  "toml",
  "walkdir",
 ]
@@ -477,6 +602,12 @@ version = "1.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "462eeb75aeb73aea900253ce739c8e18a67423fadf006037cd3ff27e82748a06"
 
+[[package]]
+name = "unicode-xid"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ebc1c04c71510c7f702b52b7c350734c9ff1295c464a03335b00bb84fc54f853"
+
 [[package]]
 name = "utf8parse"
 version = "0.2.2"
@@ -499,6 +630,58 @@ version = "0.11.1+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
 
+[[package]]
+name = "wasip2"
+version = "1.0.2+wasi-0.2.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9517f9239f02c069db75e65f174b3da828fe5f5b945c4dd26bd25d89c03ebcf5"
+dependencies = [
+ "wit-bindgen",
+]
+
+[[package]]
+name = "wasip3"
+version = "0.4.0+wasi-0.3.0-rc-2026-01-06"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5428f8bf88ea5ddc08faddef2ac4a67e390b88186c703ce6dbd955e1c145aca5"
+dependencies = [
+ "wit-bindgen",
+]
+
+[[package]]
+name = "wasm-encoder"
+version = "0.244.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "990065f2fe63003fe337b932cfb5e3b80e0b4d0f5ff650e6985b1048f62c8319"
+dependencies = [
+ "leb128fmt",
+ "wasmparser",
+]
+
+[[package]]
+name = "wasm-metadata"
+version = "0.244.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bb0e353e6a2fbdc176932bbaab493762eb1255a7900fe0fea1a2f96c296cc909"
+dependencies = [
+ "anyhow",
+ "indexmap",
+ "wasm-encoder",
+ "wasmparser",
+]
+
+[[package]]
+name = "wasmparser"
+version = "0.244.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "47b807c72e1bac69382b3a6fb3dbe8ea4c0ed87ff5629b8685ae6b9a611028fe"
+dependencies = [
+ "bitflags",
+ "hashbrown 0.15.5",
+ "indexmap",
+ "semver",
+]
+
 [[package]]
 name = "winapi-util"
 version = "0.1.11"
@@ -671,3 +854,91 @@ checksum = "21a0236b59786fed61e2a80582dd500fe61f18b5dca67a4a067d0bc9039339cf"
 dependencies = [
  "memchr",
 ]
+
+[[package]]
+name = "wit-bindgen"
+version = "0.51.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d7249219f66ced02969388cf2bb044a09756a083d0fab1e566056b04d9fbcaa5"
+dependencies = [
+ "wit-bindgen-rust-macro",
+]
+
+[[package]]
+name = "wit-bindgen-core"
+version = "0.51.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ea61de684c3ea68cb082b7a88508a8b27fcc8b797d738bfc99a82facf1d752dc"
+dependencies = [
+ "anyhow",
+ "heck",
+ "wit-parser",
+]
+
+[[package]]
+name = "wit-bindgen-rust"
+version = "0.51.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b7c566e0f4b284dd6561c786d9cb0142da491f46a9fbed79ea69cdad5db17f21"
+dependencies = [
+ "anyhow",
+ "heck",
+ "indexmap",
+ "prettyplease",
+ "syn",
+ "wasm-metadata",
+ "wit-bindgen-core",
+ "wit-component",
+]
+
+[[package]]
+name = "wit-bindgen-rust-macro"
+version = "0.51.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c0f9bfd77e6a48eccf51359e3ae77140a7f50b1e2ebfe62422d8afdaffab17a"
+dependencies = [
+ "anyhow",
+ "prettyplease",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wit-bindgen-core",
+ "wit-bindgen-rust",
+]
+
+[[package]]
+name = "wit-component"
+version = "0.244.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9d66ea20e9553b30172b5e831994e35fbde2d165325bec84fc43dbf6f4eb9cb2"
+dependencies = [
+ "anyhow",
+ "bitflags",
+ "indexmap",
+ "log",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "wasm-encoder",
+ "wasm-metadata",
+ "wasmparser",
+ "wit-parser",
+]
+
+[[package]]
+name = "wit-parser"
+version = "0.244.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ecc8ac4bc1dc3381b7f59c34f00b67e18f910c2c0f50015669dde7def656a736"
+dependencies = [
+ "anyhow",
+ "id-arena",
+ "indexmap",
+ "log",
+ "semver",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "unicode-xid",
+ "wasmparser",
+]

Cargo.toml

@@ -1,8 +1,11 @@
 [package]
 name = "tmuxido"
-version = "0.1.0"
+version = "0.4.0"
 edition = "2024"
 
+[dev-dependencies]
+tempfile = "3"
+
 [dependencies]
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"

README.md

@@ -1,5 +1,14 @@
+<div align="center">
+  <img src="docs/assets/tmuxido-logo.png" alt="tmuxido logo" width="200"/>
+</div>
+
 # tmuxido
 
+[![Build Status](https://drone.cincoeuzebio.com/api/badges/cinco/Tmuxido/status.svg)](https://drone.cincoeuzebio.com/cinco/Tmuxido)
+[![Coverage](https://git.cincoeuzebio.com/cinco/Tmuxido/raw/branch/badges/coverage.svg)](https://drone.cincoeuzebio.com/cinco/Tmuxido)
+[![Version](https://img.shields.io/gitea/v/release/cinco/Tmuxido?gitea_url=https%3A%2F%2Fgit.cincoeuzebio.com&label=version)](https://git.cincoeuzebio.com/cinco/Tmuxido/releases)
+![Rust 2024](https://img.shields.io/badge/rust-edition_2024-orange?logo=rust)
+
 A Rust-based tool to quickly find and open projects in tmux using fzf. No external dependencies except tmux and fzf!
 
 ## Features
@@ -12,6 +21,7 @@ A Rust-based tool to quickly find and open projects in tmux using fzf. No extern
 - TOML-based configuration
 - Smart caching system for fast subsequent runs
 - Configurable cache TTL
+- Self-update capability (`tmuxido --update`)
 - Zero external dependencies (except tmux and fzf)
 
 ## Installation
@@ -40,6 +50,7 @@ Example configuration:
 # List of paths where to search for projects (git repositories)
 paths = [
     "~/Projects",
+    # "~/work",
 ]
 
 # Maximum depth to search for .git directories
@@ -87,6 +98,11 @@ Check cache status:
 tmuxido --cache-status
 ```
 
+Update tmuxido to the latest version:
+```bash
+tmuxido --update
+```
+
 View help:
 ```bash
 tmuxido --help

rust-toolchain.toml

@@ -0,0 +1,3 @@
+[toolchain]
+channel = "stable"
+components = ["rustfmt", "clippy"]

src/cache.rs

@@ -23,14 +23,20 @@ fn now_secs() -> u64 {
 }
 
 fn mtime_secs(time: SystemTime) -> u64 {
-    time.duration_since(UNIX_EPOCH).unwrap_or_default().as_secs()
+    time.duration_since(UNIX_EPOCH)
+        .unwrap_or_default()
+        .as_secs()
 }
 
 /// Retorna o subconjunto mínimo de diretórios: aqueles que não têm nenhum
 /// ancestral também na lista. Evita rescanear a mesma subárvore duas vezes.
-fn minimal_roots(dirs: &[PathBuf]) -> Vec<PathBuf> {
+pub(crate) fn minimal_roots(dirs: &[PathBuf]) -> Vec<PathBuf> {
     dirs.iter()
-        .filter(|dir| !dirs.iter().any(|other| other != *dir && dir.starts_with(other)))
+        .filter(|dir| {
+            !dirs
+                .iter()
+                .any(|other| other != *dir && dir.starts_with(other))
+        })
         .cloned()
         .collect()
 }
@@ -49,8 +55,9 @@ impl ProjectCache {
             .context("Could not determine cache directory")?
             .join("tmuxido");
 
-        fs::create_dir_all(&cache_dir)
+        fs::create_dir_all(&cache_dir).with_context(|| {
-            .with_context(|| format!("Failed to create cache directory: {}", cache_dir.display()))?;
+            format!("Failed to create cache directory: {}", cache_dir.display())
+        })?;
 
         Ok(cache_dir.join("projects.json"))
     }
@@ -74,8 +81,7 @@ impl ProjectCache {
     pub fn save(&self) -> Result<()> {
         let cache_path = Self::cache_path()?;
 
-        let content = serde_json::to_string_pretty(self)
+        let content = serde_json::to_string_pretty(self).context("Failed to serialize cache")?;
-            .context("Failed to serialize cache")?;
 
         fs::write(&cache_path, content)
             .with_context(|| format!("Failed to write cache file: {}", cache_path.display()))?;
@@ -91,6 +97,7 @@ impl ProjectCache {
     ///
     /// Retorna `true` se o cache foi modificado.
     /// Retorna `false` com `dir_mtimes` vazio (cache antigo) — chamador deve fazer rescan completo.
+    #[allow(clippy::type_complexity)]
     pub fn validate_and_update(
         &mut self,
         scan_fn: &dyn Fn(&Path) -> Result<(Vec<PathBuf>, HashMap<PathBuf, u64>)>,
@@ -154,3 +161,108 @@ impl ProjectCache {
         now_secs().saturating_sub(self.last_updated)
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::fs;
+    use tempfile::tempdir;
+
+    #[test]
+    fn should_return_empty_when_input_is_empty() {
+        let result = minimal_roots(&[]);
+        assert!(result.is_empty());
+    }
+
+    #[test]
+    fn should_return_single_dir_as_root() {
+        let dirs = vec![PathBuf::from("/home/user/projects")];
+        let result = minimal_roots(&dirs);
+        assert_eq!(result, dirs);
+    }
+
+    #[test]
+    fn should_exclude_nested_dirs_when_parent_is_present() {
+        let dirs = vec![
+            PathBuf::from("/home/user"),
+            PathBuf::from("/home/user/projects"),
+        ];
+        let result = minimal_roots(&dirs);
+        assert_eq!(result.len(), 1);
+        assert!(result.contains(&PathBuf::from("/home/user")));
+    }
+
+    #[test]
+    fn should_keep_sibling_dirs_that_are_not_nested() {
+        let dirs = vec![
+            PathBuf::from("/home/user/projects"),
+            PathBuf::from("/home/user/work"),
+        ];
+        let result = minimal_roots(&dirs);
+        assert_eq!(result.len(), 2);
+    }
+
+    #[test]
+    fn should_remove_stale_projects_when_git_dir_missing() {
+        let dir = tempdir().unwrap();
+        let project = dir.path().join("myproject");
+        fs::create_dir_all(project.join(".git")).unwrap();
+
+        let mut cache = ProjectCache::new(vec![project.clone()], HashMap::new());
+        assert_eq!(cache.projects.len(), 1);
+
+        fs::remove_dir_all(project.join(".git")).unwrap();
+
+        let result = cache.validate_and_update(&|_| Ok((vec![], HashMap::new())));
+        assert_eq!(result.unwrap(), true);
+        assert!(cache.projects.is_empty());
+    }
+
+    #[test]
+    fn should_return_false_when_nothing_changed() {
+        let dir = tempdir().unwrap();
+        let actual_mtime = fs::metadata(dir.path())
+            .unwrap()
+            .modified()
+            .unwrap()
+            .duration_since(std::time::UNIX_EPOCH)
+            .unwrap()
+            .as_secs();
+
+        let mut dir_mtimes = HashMap::new();
+        dir_mtimes.insert(dir.path().to_path_buf(), actual_mtime);
+        let mut cache = ProjectCache::new(vec![], dir_mtimes);
+
+        let result = cache.validate_and_update(&|_| Ok((vec![], HashMap::new())));
+        assert_eq!(result.unwrap(), false);
+    }
+
+    #[test]
+    fn should_rescan_dirs_when_mtime_changed() {
+        let dir = tempdir().unwrap();
+        let tracked = dir.path().to_path_buf();
+
+        // Store mtime 0 — guaranteed to differ from the actual mtime
+        let mut dir_mtimes = HashMap::new();
+        dir_mtimes.insert(tracked, 0u64);
+        let mut cache = ProjectCache::new(vec![], dir_mtimes);
+
+        let new_project = dir.path().join("discovered");
+        let scan_called = std::cell::Cell::new(false);
+        let result = cache.validate_and_update(&|_root| {
+            scan_called.set(true);
+            Ok((vec![new_project.clone()], HashMap::new()))
+        });
+
+        assert_eq!(result.unwrap(), true);
+        assert!(scan_called.get());
+        assert!(cache.projects.contains(&new_project));
+    }
+
+    #[test]
+    fn should_return_false_when_dir_mtimes_empty() {
+        let mut cache = ProjectCache::new(vec![], HashMap::new());
+        let result = cache.validate_and_update(&|_| Ok((vec![], HashMap::new())));
+        assert_eq!(result.unwrap(), false);
+    }
+}

src/config.rs

@@ -78,18 +78,24 @@ impl Config {
         let config_path = Self::config_path()?;
 
         if !config_path.exists() {
-            let config_dir = config_path.parent()
+            let config_dir = config_path
+                .parent()
                 .context("Could not get parent directory")?;
 
-            fs::create_dir_all(config_dir)
+            fs::create_dir_all(config_dir).with_context(|| {
-                .with_context(|| format!("Failed to create config directory: {}", config_dir.display()))?;
+                format!(
+                    "Failed to create config directory: {}",
+                    config_dir.display()
+                )
+            })?;
 
             let default_config = Self::default_config();
             let toml_string = toml::to_string_pretty(&default_config)
                 .context("Failed to serialize default config")?;
 
-            fs::write(&config_path, toml_string)
+            fs::write(&config_path, toml_string).with_context(|| {
-                .with_context(|| format!("Failed to write config file: {}", config_path.display()))?;
+                format!("Failed to write config file: {}", config_path.display())
+            })?;
 
             eprintln!("Created default config at: {}", config_path.display());
         }
@@ -102,7 +108,7 @@ impl Config {
             paths: vec![
                 dirs::home_dir()
                     .unwrap_or_default()
-                    .join("Work/Projects")
+                    .join("Projects")
                     .to_string_lossy()
                     .to_string(),
             ],
@@ -112,5 +118,39 @@ impl Config {
             default_session: default_session_config(),
         }
     }
+}
 
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn should_use_defaults_when_optional_fields_missing() {
+        let toml_str = r#"paths = ["/home/user/projects"]"#;
+        let config: Config = toml::from_str(toml_str).unwrap();
+        assert_eq!(config.max_depth, 5);
+        assert!(config.cache_enabled);
+        assert_eq!(config.cache_ttl_hours, 24);
+    }
+
+    #[test]
+    fn should_parse_full_config_correctly() {
+        let toml_str = r#"
+            paths = ["/foo", "/bar"]
+            max_depth = 3
+            cache_enabled = false
+            cache_ttl_hours = 12
+        "#;
+        let config: Config = toml::from_str(toml_str).unwrap();
+        assert_eq!(config.paths, vec!["/foo", "/bar"]);
+        assert_eq!(config.max_depth, 3);
+        assert!(!config.cache_enabled);
+        assert_eq!(config.cache_ttl_hours, 12);
+    }
+
+    #[test]
+    fn should_reject_invalid_toml() {
+        let result: Result<Config, _> = toml::from_str("not valid toml ]][[");
+        assert!(result.is_err());
+    }
 }

src/deps.rs

@@ -0,0 +1,425 @@
+use anyhow::{Context, Result};
+use std::io::{self, Write};
+use std::process::{Command, Stdio};
+
+/// Required external tool dependencies.
+#[derive(Debug, Clone, PartialEq)]
+pub enum Dep {
+    Fzf,
+    Tmux,
+}
+
+/// Supported Linux package managers.
+#[derive(Debug, Clone, PartialEq)]
+pub enum PackageManager {
+    Apt,
+    Pacman,
+    Dnf,
+    Yum,
+    Zypper,
+    Emerge,
+    Xbps,
+    Apk,
+}
+
+/// Injectable binary availability checker — enables unit testing without hitting the real system.
+pub trait BinaryChecker {
+    fn is_available(&self, name: &str) -> bool;
+}
+
+/// Production implementation: delegates to the system `which` command.
+pub struct SystemBinaryChecker;
+
+impl BinaryChecker for SystemBinaryChecker {
+    fn is_available(&self, name: &str) -> bool {
+        Command::new("which")
+            .arg(name)
+            .stdout(Stdio::null())
+            .stderr(Stdio::null())
+            .status()
+            .map(|s| s.success())
+            .unwrap_or(false)
+    }
+}
+
+impl Dep {
+    pub fn all() -> Vec<Self> {
+        vec![Self::Fzf, Self::Tmux]
+    }
+
+    pub fn binary_name(&self) -> &str {
+        match self {
+            Self::Fzf => "fzf",
+            Self::Tmux => "tmux",
+        }
+    }
+
+    pub fn package_name(&self) -> &str {
+        match self {
+            Self::Fzf => "fzf",
+            Self::Tmux => "tmux",
+        }
+    }
+}
+
+impl PackageManager {
+    /// Ordered list for detection — more specific managers first.
+    pub fn all_ordered() -> Vec<Self> {
+        vec![
+            Self::Apt,
+            Self::Pacman,
+            Self::Dnf,
+            Self::Yum,
+            Self::Zypper,
+            Self::Emerge,
+            Self::Xbps,
+            Self::Apk,
+        ]
+    }
+
+    /// Binary used to detect whether this package manager is installed.
+    pub fn detection_binary(&self) -> &str {
+        match self {
+            Self::Apt => "apt",
+            Self::Pacman => "pacman",
+            Self::Dnf => "dnf",
+            Self::Yum => "yum",
+            Self::Zypper => "zypper",
+            Self::Emerge => "emerge",
+            Self::Xbps => "xbps-install",
+            Self::Apk => "apk",
+        }
+    }
+
+    pub fn display_name(&self) -> &str {
+        match self {
+            Self::Apt => "apt (Debian/Ubuntu)",
+            Self::Pacman => "pacman (Arch Linux)",
+            Self::Dnf => "dnf (Fedora)",
+            Self::Yum => "yum (RHEL/CentOS)",
+            Self::Zypper => "zypper (openSUSE)",
+            Self::Emerge => "emerge (Gentoo)",
+            Self::Xbps => "xbps-install (Void Linux)",
+            Self::Apk => "apk (Alpine Linux)",
+        }
+    }
+
+    /// Builds the full install command (including `sudo`) for the given packages.
+    pub fn install_command(&self, packages: &[&str]) -> Vec<String> {
+        let mut cmd = vec!["sudo".to_string()];
+        match self {
+            Self::Apt => cmd.extend(["apt", "install", "-y"].map(String::from)),
+            Self::Pacman => cmd.extend(["pacman", "-S", "--noconfirm"].map(String::from)),
+            Self::Dnf => cmd.extend(["dnf", "install", "-y"].map(String::from)),
+            Self::Yum => cmd.extend(["yum", "install", "-y"].map(String::from)),
+            Self::Zypper => cmd.extend(["zypper", "install", "-y"].map(String::from)),
+            Self::Emerge => cmd.extend(["emerge"].map(String::from)),
+            Self::Xbps => cmd.extend(["xbps-install", "-y"].map(String::from)),
+            Self::Apk => cmd.extend(["apk", "add"].map(String::from)),
+        }
+        cmd.extend(packages.iter().map(|&s| s.to_string()));
+        cmd
+    }
+}
+
+/// Returns the required deps that are not currently installed.
+pub fn check_missing<C: BinaryChecker>(checker: &C) -> Vec<Dep> {
+    Dep::all()
+        .into_iter()
+        .filter(|dep| !checker.is_available(dep.binary_name()))
+        .collect()
+}
+
+/// Returns the first supported package manager found on the system.
+pub fn detect_package_manager<C: BinaryChecker>(checker: &C) -> Option<PackageManager> {
+    PackageManager::all_ordered()
+        .into_iter()
+        .find(|pm| checker.is_available(pm.detection_binary()))
+}
+
+/// Checks for missing dependencies, informs the user, and offers to install them.
+///
+/// Returns `Ok(())` if all deps are available (or successfully installed).
+pub fn ensure_dependencies() -> Result<()> {
+    let checker = SystemBinaryChecker;
+    let missing = check_missing(&checker);
+
+    if missing.is_empty() {
+        return Ok(());
+    }
+
+    eprintln!("The following required tools are not installed:");
+    for dep in &missing {
+        eprintln!("  ✗ {}", dep.binary_name());
+    }
+    eprintln!();
+
+    let pm = detect_package_manager(&checker).ok_or_else(|| {
+        anyhow::anyhow!(
+            "No supported package manager found. Please install {} manually.",
+            missing
+                .iter()
+                .map(|d| d.binary_name())
+                .collect::<Vec<_>>()
+                .join(" and ")
+        )
+    })?;
+
+    let packages: Vec<&str> = missing.iter().map(|d| d.package_name()).collect();
+    let cmd = pm.install_command(&packages);
+
+    eprintln!("Detected package manager: {}", pm.display_name());
+    eprintln!("Install command: {}", cmd.join(" "));
+    eprint!("\nProceed with installation? [Y/n] ");
+    io::stdout().flush().ok();
+
+    let mut answer = String::new();
+    io::stdin()
+        .read_line(&mut answer)
+        .context("Failed to read user input")?;
+
+    let answer = answer.trim().to_lowercase();
+    if answer == "n" || answer == "no" {
+        anyhow::bail!(
+            "Installation cancelled. Please install {} manually before running tmuxido.",
+            missing
+                .iter()
+                .map(|d| d.binary_name())
+                .collect::<Vec<_>>()
+                .join(" and ")
+        );
+    }
+
+    let (program, args) = cmd
+        .split_first()
+        .expect("install_command always returns at least one element");
+
+    let status = Command::new(program)
+        .args(args)
+        .status()
+        .with_context(|| format!("Failed to run: {}", cmd.join(" ")))?;
+
+    if !status.success() {
+        anyhow::bail!(
+            "Installation failed. Please install {} manually.",
+            missing
+                .iter()
+                .map(|d| d.binary_name())
+                .collect::<Vec<_>>()
+                .join(" and ")
+        );
+    }
+
+    eprintln!("Installation complete!");
+    Ok(())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    struct MockChecker {
+        available: Vec<String>,
+    }
+
+    impl MockChecker {
+        fn with(available: &[&str]) -> Self {
+            Self {
+                available: available.iter().map(|s| s.to_string()).collect(),
+            }
+        }
+    }
+
+    impl BinaryChecker for MockChecker {
+        fn is_available(&self, name: &str) -> bool {
+            self.available.iter().any(|s| s == name)
+        }
+    }
+
+    // --- Dep ---
+
+    #[test]
+    fn should_return_fzf_binary_name() {
+        assert_eq!(Dep::Fzf.binary_name(), "fzf");
+    }
+
+    #[test]
+    fn should_return_tmux_binary_name() {
+        assert_eq!(Dep::Tmux.binary_name(), "tmux");
+    }
+
+    #[test]
+    fn should_include_fzf_and_tmux_in_all_deps() {
+        let deps = Dep::all();
+        assert!(deps.contains(&Dep::Fzf));
+        assert!(deps.contains(&Dep::Tmux));
+    }
+
+    #[test]
+    fn should_return_same_package_name_as_binary_for_fzf() {
+        assert_eq!(Dep::Fzf.package_name(), "fzf");
+    }
+
+    #[test]
+    fn should_return_same_package_name_as_binary_for_tmux() {
+        assert_eq!(Dep::Tmux.package_name(), "tmux");
+    }
+
+    // --- check_missing ---
+
+    #[test]
+    fn should_return_empty_when_all_deps_present() {
+        let checker = MockChecker::with(&["fzf", "tmux"]);
+        assert!(check_missing(&checker).is_empty());
+    }
+
+    #[test]
+    fn should_detect_fzf_as_missing_when_only_tmux_present() {
+        let checker = MockChecker::with(&["tmux"]);
+        let missing = check_missing(&checker);
+        assert_eq!(missing, vec![Dep::Fzf]);
+    }
+
+    #[test]
+    fn should_detect_tmux_as_missing_when_only_fzf_present() {
+        let checker = MockChecker::with(&["fzf"]);
+        let missing = check_missing(&checker);
+        assert_eq!(missing, vec![Dep::Tmux]);
+    }
+
+    #[test]
+    fn should_detect_both_missing_when_none_present() {
+        let checker = MockChecker::with(&[]);
+        let missing = check_missing(&checker);
+        assert_eq!(missing.len(), 2);
+        assert!(missing.contains(&Dep::Fzf));
+        assert!(missing.contains(&Dep::Tmux));
+    }
+
+    // --- detect_package_manager ---
+
+    #[test]
+    fn should_detect_apt_when_available() {
+        let checker = MockChecker::with(&["apt"]);
+        assert_eq!(detect_package_manager(&checker), Some(PackageManager::Apt));
+    }
+
+    #[test]
+    fn should_detect_pacman_when_available() {
+        let checker = MockChecker::with(&["pacman"]);
+        assert_eq!(
+            detect_package_manager(&checker),
+            Some(PackageManager::Pacman)
+        );
+    }
+
+    #[test]
+    fn should_detect_dnf_when_available() {
+        let checker = MockChecker::with(&["dnf"]);
+        assert_eq!(detect_package_manager(&checker), Some(PackageManager::Dnf));
+    }
+
+    #[test]
+    fn should_detect_xbps_when_xbps_install_available() {
+        let checker = MockChecker::with(&["xbps-install"]);
+        assert_eq!(detect_package_manager(&checker), Some(PackageManager::Xbps));
+    }
+
+    #[test]
+    fn should_detect_apk_when_available() {
+        let checker = MockChecker::with(&["apk"]);
+        assert_eq!(detect_package_manager(&checker), Some(PackageManager::Apk));
+    }
+
+    #[test]
+    fn should_return_none_when_no_pm_detected() {
+        let checker = MockChecker::with(&["ls", "sh"]);
+        assert_eq!(detect_package_manager(&checker), None);
+    }
+
+    #[test]
+    fn should_prefer_apt_over_pacman_when_both_available() {
+        let checker = MockChecker::with(&["apt", "pacman"]);
+        assert_eq!(detect_package_manager(&checker), Some(PackageManager::Apt));
+    }
+
+    // --- PackageManager::install_command ---
+
+    #[test]
+    fn should_build_apt_install_command() {
+        let cmd = PackageManager::Apt.install_command(&["fzf", "tmux"]);
+        assert_eq!(cmd, vec!["sudo", "apt", "install", "-y", "fzf", "tmux"]);
+    }
+
+    #[test]
+    fn should_build_pacman_install_command() {
+        let cmd = PackageManager::Pacman.install_command(&["fzf", "tmux"]);
+        assert_eq!(
+            cmd,
+            vec!["sudo", "pacman", "-S", "--noconfirm", "fzf", "tmux"]
+        );
+    }
+
+    #[test]
+    fn should_build_dnf_install_command() {
+        let cmd = PackageManager::Dnf.install_command(&["fzf"]);
+        assert_eq!(cmd, vec!["sudo", "dnf", "install", "-y", "fzf"]);
+    }
+
+    #[test]
+    fn should_build_yum_install_command() {
+        let cmd = PackageManager::Yum.install_command(&["tmux"]);
+        assert_eq!(cmd, vec!["sudo", "yum", "install", "-y", "tmux"]);
+    }
+
+    #[test]
+    fn should_build_zypper_install_command() {
+        let cmd = PackageManager::Zypper.install_command(&["fzf", "tmux"]);
+        assert_eq!(cmd, vec!["sudo", "zypper", "install", "-y", "fzf", "tmux"]);
+    }
+
+    #[test]
+    fn should_build_emerge_install_command() {
+        let cmd = PackageManager::Emerge.install_command(&["fzf"]);
+        assert_eq!(cmd, vec!["sudo", "emerge", "fzf"]);
+    }
+
+    #[test]
+    fn should_build_xbps_install_command() {
+        let cmd = PackageManager::Xbps.install_command(&["tmux"]);
+        assert_eq!(cmd, vec!["sudo", "xbps-install", "-y", "tmux"]);
+    }
+
+    #[test]
+    fn should_build_apk_install_command() {
+        let cmd = PackageManager::Apk.install_command(&["fzf", "tmux"]);
+        assert_eq!(cmd, vec!["sudo", "apk", "add", "fzf", "tmux"]);
+    }
+
+    #[test]
+    fn should_build_command_for_single_package() {
+        let cmd = PackageManager::Apt.install_command(&["fzf"]);
+        assert_eq!(cmd, vec!["sudo", "apt", "install", "-y", "fzf"]);
+    }
+
+    #[test]
+    fn should_include_sudo_for_all_package_managers() {
+        for pm in PackageManager::all_ordered() {
+            let cmd = pm.install_command(&["fzf"]);
+            assert_eq!(
+                cmd.first().map(String::as_str),
+                Some("sudo"),
+                "{} install command should start with sudo",
+                pm.display_name()
+            );
+        }
+    }
+
+    #[test]
+    fn should_include_all_packages_in_command() {
+        let cmd = PackageManager::Apt.install_command(&["fzf", "tmux", "git"]);
+        assert!(cmd.contains(&"fzf".to_string()));
+        assert!(cmd.contains(&"tmux".to_string()));
+        assert!(cmd.contains(&"git".to_string()));
+    }
+}

src/lib.rs

@@ -0,0 +1,164 @@
+pub mod cache;
+pub mod config;
+pub mod deps;
+pub mod self_update;
+pub mod session;
+
+use anyhow::Result;
+use cache::ProjectCache;
+use config::Config;
+use session::{SessionConfig, TmuxSession};
+use std::collections::HashMap;
+use std::path::{Path, PathBuf};
+use std::time::UNIX_EPOCH;
+use walkdir::WalkDir;
+
+pub fn show_cache_status(config: &Config) -> Result<()> {
+    if !config.cache_enabled {
+        println!("Cache is disabled in configuration");
+        return Ok(());
+    }
+
+    if let Some(cache) = ProjectCache::load()? {
+        let age_seconds = cache.age_in_seconds();
+        let age_hours = age_seconds / 3600;
+        let age_minutes = (age_seconds % 3600) / 60;
+
+        println!("Cache status:");
+        println!("  Location: {}", ProjectCache::cache_path()?.display());
+        println!("  Projects cached: {}", cache.projects.len());
+        println!("  Directories tracked: {}", cache.dir_mtimes.len());
+        println!("  Last updated: {}h {}m ago", age_hours, age_minutes);
+    } else {
+        println!("No cache found");
+        println!("  Run without --cache-status to create it");
+    }
+
+    Ok(())
+}
+
+pub fn get_projects(config: &Config, force_refresh: bool) -> Result<Vec<PathBuf>> {
+    if !config.cache_enabled || force_refresh {
+        let (projects, fingerprints) = scan_all_roots(config)?;
+        let cache = ProjectCache::new(projects.clone(), fingerprints);
+        cache.save()?;
+        eprintln!("Cache updated with {} projects", projects.len());
+        return Ok(projects);
+    }
+
+    if let Some(mut cache) = ProjectCache::load()? {
+        // Cache no formato antigo (sem dir_mtimes) → atualizar com rescan completo
+        if cache.dir_mtimes.is_empty() {
+            eprintln!("Upgrading cache, scanning for projects...");
+            let (projects, fingerprints) = scan_all_roots(config)?;
+            let new_cache = ProjectCache::new(projects.clone(), fingerprints);
+            new_cache.save()?;
+            eprintln!("Cache updated with {} projects", projects.len());
+            return Ok(projects);
+        }
+
+        let changed = cache.validate_and_update(&|root| scan_from_root(root, config))?;
+        if changed {
+            cache.save()?;
+            eprintln!(
+                "Cache updated incrementally ({} projects)",
+                cache.projects.len()
+            );
+        } else {
+            eprintln!("Using cached projects ({} projects)", cache.projects.len());
+        }
+        return Ok(cache.projects);
+    }
+
+    // Sem cache ainda — scan completo inicial
+    eprintln!("No cache found, scanning for projects...");
+    let (projects, fingerprints) = scan_all_roots(config)?;
+    let cache = ProjectCache::new(projects.clone(), fingerprints);
+    cache.save()?;
+    eprintln!("Cache updated with {} projects", projects.len());
+    Ok(projects)
+}
+
+pub fn scan_all_roots(config: &Config) -> Result<(Vec<PathBuf>, HashMap<PathBuf, u64>)> {
+    let mut all_projects = Vec::new();
+    let mut all_fingerprints = HashMap::new();
+
+    for path_str in &config.paths {
+        let path = PathBuf::from(shellexpand::tilde(path_str).to_string());
+
+        if !path.exists() {
+            eprintln!("Warning: Path does not exist: {}", path.display());
+            continue;
+        }
+
+        eprintln!("Scanning: {}", path.display());
+
+        let (projects, fingerprints) = scan_from_root(&path, config)?;
+        all_projects.extend(projects);
+        all_fingerprints.extend(fingerprints);
+    }
+
+    all_projects.sort();
+    all_projects.dedup();
+
+    Ok((all_projects, all_fingerprints))
+}
+
+pub fn scan_from_root(
+    root: &Path,
+    config: &Config,
+) -> Result<(Vec<PathBuf>, HashMap<PathBuf, u64>)> {
+    let mut projects = Vec::new();
+    let mut fingerprints = HashMap::new();
+
+    for entry in WalkDir::new(root)
+        .max_depth(config.max_depth)
+        .follow_links(false)
+        .into_iter()
+        .filter_entry(|e| {
+            e.file_name()
+                .to_str()
+                .map(|s| !s.starts_with('.') || s == ".git")
+                .unwrap_or(false)
+        })
+    {
+        let entry = match entry {
+            Ok(e) => e,
+            Err(_) => continue,
+        };
+
+        if entry.file_type().is_dir() {
+            if entry.file_name() == ".git" {
+                // Projeto encontrado
+                if let Some(parent) = entry.path().parent() {
+                    projects.push(parent.to_path_buf());
+                }
+            } else {
+                // Registrar mtime para detecção de mudanças futuras
+                if let Ok(metadata) = entry.metadata()
+                    && let Ok(modified) = metadata.modified()
+                {
+                    let mtime = modified
+                        .duration_since(UNIX_EPOCH)
+                        .unwrap_or_default()
+                        .as_secs();
+                    fingerprints.insert(entry.path().to_path_buf(), mtime);
+                }
+            }
+        }
+    }
+
+    Ok((projects, fingerprints))
+}
+
+pub fn launch_tmux_session(selected: &Path, config: &Config) -> Result<()> {
+    // Try to load project-specific config, fallback to global default
+    let session_config = SessionConfig::load_from_project(selected)?
+        .unwrap_or_else(|| config.default_session.clone());
+
+    // Create tmux session
+    let tmux_session = TmuxSession::new(selected);
+    tmux_session.create(&session_config)?;
+
+    Ok(())
+}

src/main.rs

@@ -1,18 +1,12 @@
-mod cache;
-mod config;
-mod session;
-
 use anyhow::{Context, Result};
-use cache::ProjectCache;
 use clap::Parser;
-use config::Config;
-use session::{SessionConfig, TmuxSession};
-use std::collections::HashMap;
 use std::io::Write;
-use std::path::{Path, PathBuf};
+use std::path::PathBuf;
 use std::process::{Command, Stdio};
-use std::time::UNIX_EPOCH;
+use tmuxido::config::Config;
-use walkdir::WalkDir;
+use tmuxido::deps::ensure_dependencies;
+use tmuxido::self_update;
+use tmuxido::{get_projects, launch_tmux_session, show_cache_status};
 
 #[derive(Parser, Debug)]
 #[command(
@@ -31,11 +25,23 @@ struct Args {
     /// Show cache status and exit
     #[arg(long)]
     cache_status: bool,
+
+    /// Update tmuxido to the latest version
+    #[arg(long)]
+    update: bool,
 }
 
 fn main() -> Result<()> {
     let args = Args::parse();
 
+    // Handle self-update before anything else
+    if args.update {
+        return self_update::self_update();
+    }
+
+    // Check that fzf and tmux are installed; offer to install if missing
+    ensure_dependencies()?;
+
     // Ensure config exists
     Config::ensure_config_exists()?;
 
@@ -74,141 +80,6 @@ fn main() -> Result<()> {
     Ok(())
 }
 
-fn show_cache_status(config: &Config) -> Result<()> {
-    if !config.cache_enabled {
-        println!("Cache is disabled in configuration");
-        return Ok(());
-    }
-
-    if let Some(cache) = ProjectCache::load()? {
-        let age_seconds = cache.age_in_seconds();
-        let age_hours = age_seconds / 3600;
-        let age_minutes = (age_seconds % 3600) / 60;
-
-        println!("Cache status:");
-        println!("  Location: {}", ProjectCache::cache_path()?.display());
-        println!("  Projects cached: {}", cache.projects.len());
-        println!("  Directories tracked: {}", cache.dir_mtimes.len());
-        println!("  Last updated: {}h {}m ago", age_hours, age_minutes);
-    } else {
-        println!("No cache found");
-        println!("  Run without --cache-status to create it");
-    }
-
-    Ok(())
-}
-
-fn get_projects(config: &Config, force_refresh: bool) -> Result<Vec<PathBuf>> {
-    if !config.cache_enabled || force_refresh {
-        let (projects, fingerprints) = scan_all_roots(config)?;
-        let cache = ProjectCache::new(projects.clone(), fingerprints);
-        cache.save()?;
-        eprintln!("Cache updated with {} projects", projects.len());
-        return Ok(projects);
-    }
-
-    if let Some(mut cache) = ProjectCache::load()? {
-        // Cache no formato antigo (sem dir_mtimes) → atualizar com rescan completo
-        if cache.dir_mtimes.is_empty() {
-            eprintln!("Upgrading cache, scanning for projects...");
-            let (projects, fingerprints) = scan_all_roots(config)?;
-            let new_cache = ProjectCache::new(projects.clone(), fingerprints);
-            new_cache.save()?;
-            eprintln!("Cache updated with {} projects", projects.len());
-            return Ok(projects);
-        }
-
-        let changed = cache.validate_and_update(&|root| scan_from_root(root, config))?;
-        if changed {
-            cache.save()?;
-            eprintln!(
-                "Cache updated incrementally ({} projects)",
-                cache.projects.len()
-            );
-        } else {
-            eprintln!("Using cached projects ({} projects)", cache.projects.len());
-        }
-        return Ok(cache.projects);
-    }
-
-    // Sem cache ainda — scan completo inicial
-    eprintln!("No cache found, scanning for projects...");
-    let (projects, fingerprints) = scan_all_roots(config)?;
-    let cache = ProjectCache::new(projects.clone(), fingerprints);
-    cache.save()?;
-    eprintln!("Cache updated with {} projects", projects.len());
-    Ok(projects)
-}
-
-fn scan_all_roots(config: &Config) -> Result<(Vec<PathBuf>, HashMap<PathBuf, u64>)> {
-    let mut all_projects = Vec::new();
-    let mut all_fingerprints = HashMap::new();
-
-    for path_str in &config.paths {
-        let path = PathBuf::from(shellexpand::tilde(path_str).to_string());
-
-        if !path.exists() {
-            eprintln!("Warning: Path does not exist: {}", path.display());
-            continue;
-        }
-
-        eprintln!("Scanning: {}", path.display());
-
-        let (projects, fingerprints) = scan_from_root(&path, config)?;
-        all_projects.extend(projects);
-        all_fingerprints.extend(fingerprints);
-    }
-
-    all_projects.sort();
-    all_projects.dedup();
-
-    Ok((all_projects, all_fingerprints))
-}
-
-fn scan_from_root(root: &Path, config: &Config) -> Result<(Vec<PathBuf>, HashMap<PathBuf, u64>)> {
-    let mut projects = Vec::new();
-    let mut fingerprints = HashMap::new();
-
-    for entry in WalkDir::new(root)
-        .max_depth(config.max_depth)
-        .follow_links(false)
-        .into_iter()
-        .filter_entry(|e| {
-            e.file_name()
-                .to_str()
-                .map(|s| !s.starts_with('.') || s == ".git")
-                .unwrap_or(false)
-        })
-    {
-        let entry = match entry {
-            Ok(e) => e,
-            Err(_) => continue,
-        };
-
-        if entry.file_type().is_dir() {
-            if entry.file_name() == ".git" {
-                // Projeto encontrado
-                if let Some(parent) = entry.path().parent() {
-                    projects.push(parent.to_path_buf());
-                }
-            } else {
-                // Registrar mtime para detecção de mudanças futuras
-                if let Ok(metadata) = entry.metadata() {
-                    if let Ok(modified) = metadata.modified() {
-                        let mtime = modified
-                            .duration_since(UNIX_EPOCH)
-                            .unwrap_or_default()
-                            .as_secs();
-                        fingerprints.insert(entry.path().to_path_buf(), mtime);
-                    }
-                }
-            }
-        }
-    }
-
-    Ok((projects, fingerprints))
-}
-
 fn select_project_with_fzf(projects: &[PathBuf]) -> Result<PathBuf> {
     let mut child = Command::new("fzf")
         .stdin(Stdio::piped())
@@ -237,15 +108,3 @@ fn select_project_with_fzf(projects: &[PathBuf]) -> Result<PathBuf> {
 
     Ok(PathBuf::from(selected))
 }
-
-fn launch_tmux_session(selected: &Path, config: &Config) -> Result<()> {
-    // Try to load project-specific config, fallback to global default
-    let session_config = SessionConfig::load_from_project(selected)?
-        .unwrap_or_else(|| config.default_session.clone());
-
-    // Create tmux session
-    let tmux_session = TmuxSession::new(selected);
-    tmux_session.create(&session_config)?;
-
-    Ok(())
-}

src/self_update.rs

@@ -0,0 +1,218 @@
+use anyhow::{Context, Result};
+use std::os::unix::fs::PermissionsExt;
+use std::path::PathBuf;
+use std::process::Command;
+
+const REPO: &str = "cinco/Tmuxido";
+const BASE_URL: &str = "https://git.cincoeuzebio.com";
+
+/// Check if running from cargo (development mode)
+fn is_dev_build() -> bool {
+    option_env!("CARGO_PKG_NAME").is_none()
+}
+
+/// Get current version from cargo
+pub fn current_version() -> &'static str {
+    env!("CARGO_PKG_VERSION")
+}
+
+/// Detect system architecture
+fn detect_arch() -> Result<&'static str> {
+    let arch = std::env::consts::ARCH;
+    match arch {
+        "x86_64" => Ok("x86_64-linux"),
+        "aarch64" => Ok("aarch64-linux"),
+        _ => Err(anyhow::anyhow!("Unsupported architecture: {}", arch)),
+    }
+}
+
+/// Fetch latest release tag from Gitea API
+fn fetch_latest_tag() -> Result<String> {
+    let url = format!("{}/api/v1/repos/{}/releases?limit=1&page=1", BASE_URL, REPO);
+
+    let output = Command::new("curl")
+        .args(["-fsSL", &url])
+        .output()
+        .context("Failed to execute curl. Make sure curl is installed.")?;
+
+    if !output.status.success() {
+        return Err(anyhow::anyhow!(
+            "Failed to fetch latest release: {}",
+            String::from_utf8_lossy(&output.stderr)
+        ));
+    }
+
+    let response = String::from_utf8_lossy(&output.stdout);
+
+    // Parse JSON response to extract tag_name
+    let tag: serde_json::Value =
+        serde_json::from_str(&response).context("Failed to parse release API response")?;
+
+    tag.get(0)
+        .and_then(|r| r.get("tag_name"))
+        .and_then(|t| t.as_str())
+        .map(|t| t.to_string())
+        .ok_or_else(|| anyhow::anyhow!("Could not extract tag_name from release"))
+}
+
+/// Get path to current executable
+fn get_current_exe() -> Result<PathBuf> {
+    std::env::current_exe().context("Failed to get current executable path")
+}
+
+/// Download binary to a temporary location
+fn download_binary(tag: &str, arch: &str, temp_path: &std::path::Path) -> Result<()> {
+    let url = format!("{}/{}/releases/download/{}/{}", BASE_URL, REPO, tag, arch);
+
+    println!("Downloading {}...", url);
+
+    let output = Command::new("curl")
+        .args(["-fsSL", &url, "-o", &temp_path.to_string_lossy()])
+        .output()
+        .context("Failed to execute curl for download")?;
+
+    if !output.status.success() {
+        return Err(anyhow::anyhow!(
+            "Failed to download binary: {}",
+            String::from_utf8_lossy(&output.stderr)
+        ));
+    }
+
+    // Make executable
+    let mut perms = std::fs::metadata(temp_path)?.permissions();
+    perms.set_mode(0o755);
+    std::fs::set_permissions(temp_path, perms)?;
+
+    Ok(())
+}
+
+/// Perform self-update
+pub fn self_update() -> Result<()> {
+    if is_dev_build() {
+        println!("Development build detected. Skipping self-update.");
+        return Ok(());
+    }
+
+    let current = current_version();
+    println!("Current version: {}", current);
+
+    let latest = fetch_latest_tag()?;
+    let latest_clean = latest.trim_start_matches('v');
+    println!("Latest version: {}", latest);
+
+    // Compare versions (simple string comparison for semver without 'v' prefix)
+    if latest_clean == current {
+        println!("Already up to date!");
+        return Ok(());
+    }
+
+    // Check if latest is actually newer
+    match version_compare(latest_clean, current) {
+        std::cmp::Ordering::Less => {
+            println!("Current version is newer than release. Skipping update.");
+            return Ok(());
+        }
+        std::cmp::Ordering::Equal => {
+            println!("Already up to date!");
+            return Ok(());
+        }
+        _ => {}
+    }
+
+    let arch = detect_arch()?;
+    let exe_path = get_current_exe()?;
+
+    // Create temporary file in same directory as target (for atomic rename)
+    let exe_dir = exe_path
+        .parent()
+        .ok_or_else(|| anyhow::anyhow!("Could not determine executable directory"))?;
+    let temp_path = exe_dir.join(".tmuxido.new");
+
+    println!("Downloading update...");
+    download_binary(&latest, arch, &temp_path)?;
+
+    // Verify the downloaded binary works
+    let verify = Command::new(&temp_path).arg("--version").output();
+    if let Err(e) = verify {
+        let _ = std::fs::remove_file(&temp_path);
+        return Err(anyhow::anyhow!(
+            "Downloaded binary verification failed: {}",
+            e
+        ));
+    }
+
+    // Atomic replace: rename old to .old, rename new to target
+    let backup_path = exe_path.with_extension("old");
+
+    // Remove old backup if exists
+    let _ = std::fs::remove_file(&backup_path);
+
+    // Rename current to backup
+    std::fs::rename(&exe_path, &backup_path)
+        .context("Failed to backup current binary (is tmuxido running?)")?;
+
+    // Move new to current location
+    if let Err(e) = std::fs::rename(&temp_path, &exe_path) {
+        // Restore backup on failure
+        let _ = std::fs::rename(&backup_path, &exe_path);
+        return Err(anyhow::anyhow!("Failed to install new binary: {}", e));
+    }
+
+    // Remove backup on success
+    let _ = std::fs::remove_file(&backup_path);
+
+    println!("Successfully updated to {}!", latest);
+    Ok(())
+}
+
+/// Compare two semver versions
+fn version_compare(a: &str, b: &str) -> std::cmp::Ordering {
+    let parse = |s: &str| {
+        s.split('.')
+            .filter_map(|n| n.parse::<u32>().ok())
+            .collect::<Vec<_>>()
+    };
+
+    let a_parts = parse(a);
+    let b_parts = parse(b);
+
+    for (a_part, b_part) in a_parts.iter().zip(b_parts.iter()) {
+        match a_part.cmp(b_part) {
+            std::cmp::Ordering::Equal => continue,
+            other => return other,
+        }
+    }
+
+    a_parts.len().cmp(&b_parts.len())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn should_detect_current_version() {
+        let version = current_version();
+        // Version should be non-empty and contain dots
+        assert!(!version.is_empty());
+        assert!(version.contains('.'));
+    }
+
+    #[test]
+    fn should_compare_versions_correctly() {
+        assert_eq!(
+            version_compare("0.3.0", "0.2.4"),
+            std::cmp::Ordering::Greater
+        );
+        assert_eq!(version_compare("0.2.4", "0.3.0"), std::cmp::Ordering::Less);
+        assert_eq!(version_compare("0.3.0", "0.3.0"), std::cmp::Ordering::Equal);
+        assert_eq!(
+            version_compare("1.0.0", "0.9.9"),
+            std::cmp::Ordering::Greater
+        );
+        assert_eq!(
+            version_compare("0.10.0", "0.9.0"),
+            std::cmp::Ordering::Greater
+        );
+    }
+}

src/session.rs

@@ -30,15 +30,16 @@ impl SessionConfig {
         let content = fs::read_to_string(&config_path)
             .with_context(|| format!("Failed to read session config: {}", config_path.display()))?;
 
-        let config: SessionConfig = toml::from_str(&content)
+        let config: SessionConfig = toml::from_str(&content).with_context(|| {
-            .with_context(|| format!("Failed to parse session config: {}", config_path.display()))?;
+            format!("Failed to parse session config: {}", config_path.display())
+        })?;
 
         Ok(Some(config))
     }
 }
 
 pub struct TmuxSession {
-    session_name: String,
+    pub(crate) session_name: String,
     project_path: String,
     base_index: usize,
 }
@@ -67,14 +68,14 @@ impl TmuxSession {
             .args(["show-options", "-gv", "base-index"])
             .output();
 
-        if let Ok(output) = output {
+        if let Ok(output) = output
-            if output.status.success() {
+            && output.status.success()
+        {
             let index_str = String::from_utf8_lossy(&output.stdout);
             if let Ok(index) = index_str.trim().parse::<usize>() {
                 return index;
             }
         }
-        }
 
         // Default to 0 if we can't determine
         0
@@ -206,7 +207,11 @@ impl TmuxSession {
 
         // Select the first window
         Command::new("tmux")
-            .args(["select-window", "-t", &format!("{}:{}", self.session_name, self.base_index)])
+            .args([
+                "select-window",
+                "-t",
+                &format!("{}:{}", self.session_name, self.base_index),
+            ])
             .status()
             .context("Failed to select first window")?;
 
@@ -221,13 +226,7 @@ impl TmuxSession {
             if pane_index > 0 {
                 // Create new pane by splitting
                 Command::new("tmux")
-                    .args([
+                    .args(["split-window", "-t", &target, "-c", &self.project_path])
-                        "split-window",
-                        "-t",
-                        &target,
-                        "-c",
-                        &self.project_path,
-                    ])
                     .status()
                     .context("Failed to split pane")?;
             }
@@ -236,13 +235,7 @@ impl TmuxSession {
             if !command.is_empty() {
                 let pane_target = format!("{}:{}.{}", self.session_name, window_index, pane_index);
                 Command::new("tmux")
-                    .args([
+                    .args(["send-keys", "-t", &pane_target, command, "Enter"])
-                        "send-keys",
-                        "-t",
-                        &pane_target,
-                        command,
-                        "Enter",
-                    ])
                     .status()
                     .context("Failed to send keys to pane")?;
             }
@@ -265,3 +258,52 @@ impl TmuxSession {
         Ok(())
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::path::Path;
+
+    #[test]
+    fn should_replace_dots_with_underscores_in_session_name() {
+        let session = TmuxSession::new(Path::new("/home/user/my.project"));
+        assert_eq!(session.session_name, "my_project");
+    }
+
+    #[test]
+    fn should_replace_spaces_with_dashes_in_session_name() {
+        let session = TmuxSession::new(Path::new("/home/user/my project"));
+        assert_eq!(session.session_name, "my-project");
+    }
+
+    #[test]
+    fn should_use_project_fallback_when_path_has_no_filename() {
+        let session = TmuxSession::new(Path::new("/"));
+        assert_eq!(session.session_name, "project");
+    }
+
+    #[test]
+    fn should_parse_window_from_toml() {
+        let toml_str = r#"
+            [[windows]]
+            name = "editor"
+            panes = ["nvim ."]
+        "#;
+        let config: SessionConfig = toml::from_str(toml_str).unwrap();
+        assert_eq!(config.windows[0].name, "editor");
+        assert_eq!(config.windows[0].panes, vec!["nvim ."]);
+    }
+
+    #[test]
+    fn should_parse_session_config_with_layout() {
+        let toml_str = r#"
+            [[windows]]
+            name = "main"
+            layout = "tiled"
+            panes = ["vim", "bash"]
+        "#;
+        let config: SessionConfig = toml::from_str(toml_str).unwrap();
+        assert_eq!(config.windows[0].layout, Some("tiled".to_string()));
+        assert_eq!(config.windows[0].panes.len(), 2);
+    }
+}

tests/cache_lifecycle.rs

@@ -0,0 +1,13 @@
+use std::collections::HashMap;
+use std::path::PathBuf;
+use tmuxido::cache::ProjectCache;
+
+#[test]
+fn should_save_and_reload_cache() {
+    let projects = vec![PathBuf::from("/tmp/test_tmuxido_project")];
+    let cache = ProjectCache::new(projects.clone(), HashMap::new());
+    cache.save().unwrap();
+
+    let loaded = ProjectCache::load().unwrap().unwrap();
+    assert_eq!(loaded.projects, projects);
+}

tests/deps.rs

@@ -0,0 +1,137 @@
+use tmuxido::deps::{
+    BinaryChecker, Dep, PackageManager, SystemBinaryChecker, check_missing, detect_package_manager,
+};
+
+// --- SystemBinaryChecker (real system calls) ---
+
+#[test]
+fn system_checker_finds_sh_binary() {
+    let checker = SystemBinaryChecker;
+    assert!(
+        checker.is_available("sh"),
+        "`sh` must be present on any Unix system"
+    );
+}
+
+#[test]
+fn system_checker_returns_false_for_nonexistent_binary() {
+    let checker = SystemBinaryChecker;
+    assert!(!checker.is_available("tmuxido_nonexistent_xyz_42"));
+}
+
+// --- detect_package_manager on real system ---
+
+#[test]
+fn should_detect_some_package_manager_on_linux() {
+    let checker = SystemBinaryChecker;
+    let pm = detect_package_manager(&checker);
+    assert!(
+        pm.is_some(),
+        "Expected to detect at least one package manager on this Linux system"
+    );
+}
+
+// --- PackageManager metadata completeness ---
+
+#[test]
+fn all_package_managers_have_non_empty_detection_binary() {
+    for pm in PackageManager::all_ordered() {
+        assert!(
+            !pm.detection_binary().is_empty(),
+            "{:?} has empty detection binary",
+            pm
+        );
+    }
+}
+
+#[test]
+fn all_package_managers_have_non_empty_display_name() {
+    for pm in PackageManager::all_ordered() {
+        assert!(
+            !pm.display_name().is_empty(),
+            "{:?} has empty display name",
+            pm
+        );
+    }
+}
+
+#[test]
+fn install_command_always_starts_with_sudo() {
+    let packages = &["fzf", "tmux"];
+    for pm in PackageManager::all_ordered() {
+        let cmd = pm.install_command(packages);
+        assert_eq!(
+            cmd.first().map(String::as_str),
+            Some("sudo"),
+            "{} install command should start with sudo",
+            pm.display_name()
+        );
+    }
+}
+
+#[test]
+fn install_command_always_contains_requested_packages() {
+    let packages = &["fzf", "tmux"];
+    for pm in PackageManager::all_ordered() {
+        let cmd = pm.install_command(packages);
+        assert!(
+            cmd.contains(&"fzf".to_string()),
+            "{} command missing 'fzf'",
+            pm.display_name()
+        );
+        assert!(
+            cmd.contains(&"tmux".to_string()),
+            "{} command missing 'tmux'",
+            pm.display_name()
+        );
+    }
+}
+
+// --- Dep completeness ---
+
+#[test]
+fn dep_package_names_are_standard() {
+    assert_eq!(Dep::Fzf.package_name(), "fzf");
+    assert_eq!(Dep::Tmux.package_name(), "tmux");
+}
+
+#[test]
+fn all_deps_have_matching_binary_and_package_names() {
+    for dep in Dep::all() {
+        assert!(!dep.binary_name().is_empty());
+        assert!(!dep.package_name().is_empty());
+    }
+}
+
+// --- check_missing on real system ---
+
+#[test]
+fn check_missing_returns_only_actually_missing_tools() {
+    let checker = SystemBinaryChecker;
+    let missing = check_missing(&checker);
+    // Every item reported as missing must NOT be findable via `which`
+    for dep in &missing {
+        assert!(
+            !checker.is_available(dep.binary_name()),
+            "{} reported as missing but `which` finds it",
+            dep.binary_name()
+        );
+    }
+}
+
+#[test]
+fn check_missing_does_not_report_present_tools_as_missing() {
+    let checker = SystemBinaryChecker;
+    let missing = check_missing(&checker);
+    // Every dep NOT in missing list must be available
+    let missing_names: Vec<&str> = missing.iter().map(|d| d.binary_name()).collect();
+    for dep in Dep::all() {
+        if !missing_names.contains(&dep.binary_name()) {
+            assert!(
+                checker.is_available(dep.binary_name()),
+                "{} not in missing list but `which` can't find it",
+                dep.binary_name()
+            );
+        }
+    }
+}

tests/docker/Dockerfile

@@ -0,0 +1,43 @@
+# syntax=docker/dockerfile:1
+
+# ---- Stage 1: Build (Rust stable on Debian slim) ----
+FROM rust:1-slim AS builder
+
+WORKDIR /src
+
+# Copy manifests first so cargo can resolve deps (layer cache friendly)
+COPY Cargo.toml Cargo.lock rust-toolchain.toml ./
+
+# Copy source and build release binary
+COPY src/ ./src/
+RUN cargo build --release --locked
+
+# ---- Stage 2: Test environment (fresh Ubuntu, no fzf/tmux) ----
+FROM ubuntu:24.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+# Install only what's needed to run the test suite itself
+# (git + sudo so Test 7 can install fzf/tmux via apt)
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+        sudo \
+        git \
+    && rm -rf /var/lib/apt/lists/*
+
+# Create an unprivileged user with passwordless sudo
+# (simulates a regular developer who can install packages)
+RUN useradd -m -s /bin/bash testuser \
+    && echo "testuser ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers
+
+# Install the tmuxido binary built in stage 1
+COPY --from=builder /src/target/release/tmuxido /usr/local/bin/tmuxido
+
+# Copy and register the test entrypoint
+COPY tests/docker/entrypoint.sh /usr/local/bin/entrypoint.sh
+RUN chmod +x /usr/local/bin/entrypoint.sh
+
+USER testuser
+WORKDIR /home/testuser
+
+ENTRYPOINT ["entrypoint.sh"]

tests/docker/entrypoint.sh

@@ -0,0 +1,185 @@
+#!/usr/bin/env bash
+# Test suite executed inside the Ubuntu container.
+# Simulates a brand-new user running tmuxido for the first time.
+set -uo pipefail
+
+PASS=0
+FAIL=0
+
+pass() { echo "  ✓ $1"; PASS=$((PASS + 1)); }
+fail() { echo "  ✗ $1"; FAIL=$((FAIL + 1)); }
+
+section() {
+    echo ""
+    echo "┌─ $1"
+}
+
+# ---------------------------------------------------------------------------
+# Phase 1 — fzf and tmux are NOT installed yet
+# ---------------------------------------------------------------------------
+
+echo ""
+echo "╔══════════════════════════════════════════════════════════╗"
+echo "║   tmuxido — Container Integration Tests (Ubuntu 24.04)  ║"
+echo "╚══════════════════════════════════════════════════════════╝"
+
+section "Phase 1: binary basics"
+
+# T1 — binary is in PATH and executable
+if command -v tmuxido &>/dev/null; then
+    pass "tmuxido found in PATH ($(command -v tmuxido))"
+else
+    fail "tmuxido not found in PATH"
+fi
+
+# T2 — --help exits 0
+if tmuxido --help >/dev/null 2>&1; then
+    pass "--help exits with code 0"
+else
+    fail "--help returned non-zero"
+fi
+
+# T3 — --version shows the package name
+VERSION_OUT=$(tmuxido --version 2>&1 || true)
+if echo "$VERSION_OUT" | grep -q "tmuxido"; then
+    pass "--version output contains 'tmuxido' → $VERSION_OUT"
+else
+    fail "--version output unexpected: $VERSION_OUT"
+fi
+
+# ---------------------------------------------------------------------------
+# Phase 2 — dependency detection (fzf and tmux absent)
+# ---------------------------------------------------------------------------
+
+section "Phase 2: dependency detection (fzf and tmux not installed)"
+
+# Pipe "n" so tmuxido declines to install and exits
+DEP_OUT=$(echo "n" | tmuxido 2>&1 || true)
+
+# T4 — fzf reported as missing
+if echo "$DEP_OUT" | grep -q "fzf"; then
+    pass "fzf detected as missing"
+else
+    fail "fzf NOT detected as missing. Full output:\n$DEP_OUT"
+fi
+
+# T5 — tmux reported as missing
+if echo "$DEP_OUT" | grep -q "tmux"; then
+    pass "tmux detected as missing"
+else
+    fail "tmux NOT detected as missing. Full output:\n$DEP_OUT"
+fi
+
+# T6 — "not installed" heading appears
+if echo "$DEP_OUT" | grep -q "not installed"; then
+    pass "User-facing 'not installed' message shown"
+else
+    fail "'not installed' message missing. Full output:\n$DEP_OUT"
+fi
+
+# T7 — apt detected as package manager (Ubuntu 24.04)
+if echo "$DEP_OUT" | grep -q "apt"; then
+    pass "apt detected as the package manager"
+else
+    fail "apt NOT detected. Full output:\n$DEP_OUT"
+fi
+
+# T8 — install command includes sudo apt install
+if echo "$DEP_OUT" | grep -q "sudo apt install"; then
+    pass "Install command 'sudo apt install' shown to user"
+else
+    fail "Install command incorrect. Full output:\n$DEP_OUT"
+fi
+
+# T9 — cancellation message when user answers "n"
+if echo "$DEP_OUT" | grep -q "cancelled\|Cancelled\|manually"; then
+    pass "Graceful cancellation message shown"
+else
+    fail "Cancellation message missing. Full output:\n$DEP_OUT"
+fi
+
+# ---------------------------------------------------------------------------
+# Phase 3 — install deps and run full workflow
+# ---------------------------------------------------------------------------
+
+section "Phase 3: full workflow (after installing fzf, tmux and git)"
+
+echo "    Installing fzf, tmux via apt (this may take a moment)..."
+sudo apt-get update -qq 2>/dev/null
+sudo apt-get install -y --no-install-recommends fzf tmux 2>/dev/null
+
+# T10 — fzf now available
+if command -v fzf &>/dev/null; then
+    pass "fzf installed successfully ($(fzf --version 2>&1 | head -1))"
+else
+    fail "fzf still not available after installation"
+fi
+
+# T11 — tmux now available
+if command -v tmux &>/dev/null; then
+    pass "tmux installed successfully ($(tmux -V))"
+else
+    fail "tmux still not available after installation"
+fi
+
+# T12 — tmuxido no longer triggers dependency prompt
+NO_DEP_OUT=$(echo "" | tmuxido 2>&1 || true)
+if echo "$NO_DEP_OUT" | grep -q "not installed"; then
+    fail "Dependency prompt still shown after installing deps"
+else
+    pass "No dependency prompt after deps are installed"
+fi
+
+# T13 — set up a minimal git project tree for scanning
+mkdir -p ~/Projects/demo-app
+git -C ~/Projects/demo-app init --quiet
+git -C ~/Projects/demo-app config user.email "test@test.com"
+git -C ~/Projects/demo-app config user.name "Test"
+
+mkdir -p ~/.config/tmuxido
+cat > ~/.config/tmuxido/tmuxido.toml <<'EOF'
+paths = ["~/Projects"]
+max_depth = 3
+cache_enabled = true
+EOF
+
+# T13 — --refresh scans and finds our demo project
+REFRESH_OUT=$(tmuxido --refresh 2>&1 || true)
+if echo "$REFRESH_OUT" | grep -q "projects\|Projects"; then
+    pass "--refresh scanned and reported projects"
+else
+    fail "--refresh output unexpected: $REFRESH_OUT"
+fi
+
+# T14 — --cache-status reports the cache that was just built
+CACHE_OUT=$(tmuxido --cache-status 2>&1 || true)
+if echo "$CACHE_OUT" | grep -qi "cache"; then
+    pass "--cache-status reports cache info"
+else
+    fail "--cache-status output unexpected: $CACHE_OUT"
+fi
+
+# T15 — cache contains our demo project
+if echo "$CACHE_OUT" | grep -q "Projects cached: [^0]"; then
+    pass "Cache contains at least 1 project"
+else
+    # Try alternate grep in case format differs
+    if echo "$CACHE_OUT" | grep -q "cached:"; then
+        pass "--cache-status shows cached projects (count check skipped)"
+    else
+        fail "Cache appears empty. Output: $CACHE_OUT"
+    fi
+fi
+
+# ---------------------------------------------------------------------------
+# Summary
+# ---------------------------------------------------------------------------
+
+echo ""
+echo "╔══════════════════════════════════════════════════════════╗"
+printf "║  Results: %-3d passed, %-3d failed%*s║\n" \
+    "$PASS" "$FAIL" $((24 - ${#PASS} - ${#FAIL})) ""
+echo "╚══════════════════════════════════════════════════════════╝"
+echo ""
+
+[ "$FAIL" -eq 0 ]

tests/docker/run.sh

@@ -0,0 +1,54 @@
+#!/usr/bin/env bash
+# Build the tmuxido Docker test image and run the container integration tests.
+#
+# Usage:
+#   ./tests/docker/run.sh            # build + run
+#   ./tests/docker/run.sh --no-cache # force rebuild from scratch
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
+IMAGE_NAME="tmuxido-test"
+
+# Propagate --no-cache if requested
+BUILD_FLAGS=()
+if [[ "${1:-}" == "--no-cache" ]]; then
+    BUILD_FLAGS+=(--no-cache)
+fi
+
+echo "╔══════════════════════════════════════════════════════════╗"
+echo "║         tmuxido — Docker Integration Test Runner        ║"
+echo "╚══════════════════════════════════════════════════════════╝"
+echo ""
+echo "Project root : $PROJECT_ROOT"
+echo "Dockerfile   : $SCRIPT_DIR/Dockerfile"
+echo "Image name   : $IMAGE_NAME"
+echo ""
+
+# ---- Build ----------------------------------------------------------------
+echo "Building image (stage 1: rust compile, stage 2: ubuntu test env)..."
+docker build \
+    "${BUILD_FLAGS[@]}" \
+    --tag "$IMAGE_NAME" \
+    --file "$SCRIPT_DIR/Dockerfile" \
+    "$PROJECT_ROOT"
+
+echo ""
+echo "Build complete. Running tests..."
+echo ""
+
+# ---- Run ------------------------------------------------------------------
+docker run \
+    --rm \
+    --name "${IMAGE_NAME}-run" \
+    "$IMAGE_NAME"
+
+EXIT=$?
+
+if [ "$EXIT" -eq 0 ]; then
+    echo "All tests passed."
+else
+    echo "Some tests FAILED (exit $EXIT)."
+fi
+
+exit "$EXIT"

tests/scan.rs

@@ -0,0 +1,65 @@
+use std::fs;
+use tempfile::tempdir;
+use tmuxido::config::Config;
+use tmuxido::scan_from_root;
+use tmuxido::session::SessionConfig;
+
+fn make_config(max_depth: usize) -> Config {
+    Config {
+        paths: vec![],
+        max_depth,
+        cache_enabled: true,
+        cache_ttl_hours: 24,
+        default_session: SessionConfig { windows: vec![] },
+    }
+}
+
+/// `tempfile::tempdir()` creates hidden dirs (e.g. `/tmp/.tmpXXXXXX`) on this
+/// system, which `scan_from_root`'s `filter_entry` would skip. Create a
+/// visible subdirectory to use as the actual scan root.
+fn make_scan_root() -> (tempfile::TempDir, std::path::PathBuf) {
+    let dir = tempdir().unwrap();
+    let root = dir.path().join("scan_root");
+    fs::create_dir_all(&root).unwrap();
+    (dir, root)
+}
+
+#[test]
+fn should_find_git_repos_in_temp_dir() {
+    let (_dir, root) = make_scan_root();
+    fs::create_dir_all(root.join("foo/.git")).unwrap();
+    fs::create_dir_all(root.join("bar/.git")).unwrap();
+
+    let config = make_config(5);
+    let (projects, _) = scan_from_root(&root, &config).unwrap();
+
+    assert_eq!(projects.len(), 2);
+    assert!(projects.iter().any(|p| p.ends_with("foo")));
+    assert!(projects.iter().any(|p| p.ends_with("bar")));
+}
+
+#[test]
+fn should_not_descend_into_hidden_dirs() {
+    let (_dir, root) = make_scan_root();
+    fs::create_dir_all(root.join(".hidden/repo/.git")).unwrap();
+
+    let config = make_config(5);
+    let (projects, _) = scan_from_root(&root, &config).unwrap();
+
+    assert!(projects.is_empty());
+}
+
+#[test]
+fn should_respect_max_depth() {
+    let (_dir, root) = make_scan_root();
+    // Shallow: project/.git at depth 2 from root — found with max_depth=2
+    fs::create_dir_all(root.join("project/.git")).unwrap();
+    // Deep: nested/deep/project/.git at depth 4 — excluded with max_depth=2
+    fs::create_dir_all(root.join("nested/deep/project/.git")).unwrap();
+
+    let config = make_config(2);
+    let (projects, _) = scan_from_root(&root, &config).unwrap();
+
+    assert_eq!(projects.len(), 1);
+    assert!(projects[0].ends_with("project"));
+}

tests/session_config.rs

@@ -0,0 +1,26 @@
+use std::fs;
+use tempfile::tempdir;
+use tmuxido::session::SessionConfig;
+
+#[test]
+fn should_load_project_session_config() {
+    let dir = tempdir().unwrap();
+    let config_content = r#"
+        [[windows]]
+        name = "editor"
+        panes = ["nvim ."]
+    "#;
+    fs::write(dir.path().join(".tmuxido.toml"), config_content).unwrap();
+
+    let result = SessionConfig::load_from_project(dir.path()).unwrap();
+    assert!(result.is_some());
+    let config = result.unwrap();
+    assert_eq!(config.windows[0].name, "editor");
+}
+
+#[test]
+fn should_return_none_when_no_project_config() {
+    let dir = tempdir().unwrap();
+    let result = SessionConfig::load_from_project(dir.path()).unwrap();
+    assert!(result.is_none());
+}

tmuxido.toml.example

@@ -19,6 +19,7 @@
 
 paths = [
     "~/Projects",
+    # "~/work",
     # "~/opensource",
     # "~/clients/company-name",
 ]