Phase 0: Per-project .dirge/ path resolution

src/extras/dirge_paths.rs

@@ -0,0 +1,184 @@
+//! Per-project `.dirge/` directory resolution.
+//!
+//! This is the canonical entry point for all per-project storage.
+//! Hermes stores everything globally in `~/.hermes/`; dirge stores
+//! per-project knowledge in `.dirge/` at the repository root (where
+//! `.git/` lives). Each project gets independent memory, skills,
+//! and session history.
+//!
+//! The existing `extras::memory` module stores in `~/.dirge/memories/`
+//! (user-global, project-keyed by path hash). That serves a different
+//! purpose — user notes that follow you across machines. Phase 2 will
+//! wire `ProjectPaths` into a new per-project `MemoryStore` without
+//! touching the global memory module.
+
+use std::path::{Path, PathBuf};
+
+/// Walk up from `cwd` until a `.git/` directory is found.
+/// Returns `cwd` unchanged if no git root is found (user may
+/// be outside a repo — per-project features degrade gracefully).
+pub fn find_git_root(cwd: &Path) -> PathBuf {
+    let mut current = cwd.to_path_buf();
+    loop {
+        if current.join(".git").is_dir() {
+            return current;
+        }
+        if !current.pop() {
+            return cwd.to_path_buf();
+        }
+    }
+}
+
+/// `DIRGE_PROJECT_ROOT` override. When set and pointing to an
+/// existing directory, this is the project root instead of the
+/// auto-detected git root. Useful for monorepos where the
+/// logical project is a subdirectory.
+pub fn project_root_override() -> Option<PathBuf> {
+    std::env::var("DIRGE_PROJECT_ROOT")
+        .ok()
+        .map(PathBuf::from)
+        .filter(|p| p.is_dir())
+}
+
+/// Resolve the active project root: `DIRGE_PROJECT_ROOT` wins if
+/// set and valid, otherwise walk up from CWD looking for `.git/`.
+pub fn project_root(cwd: &Path) -> PathBuf {
+    project_root_override().unwrap_or_else(|| find_git_root(cwd))
+}
+
+/// Canonical paths into the per-project `.dirge/` tree.
+///
+/// Construct with `ProjectPaths::new(cwd)`. All subdirectory
+/// accessors are lazy — directories are not created until
+/// something actually writes into them.
+#[derive(Debug, Clone)]
+pub struct ProjectPaths {
+    /// The project root (usually where `.git/` lives).
+    pub root: PathBuf,
+}
+
+impl ProjectPaths {
+    pub fn new(cwd: &Path) -> Self {
+        ProjectPaths {
+            root: project_root(cwd),
+        }
+    }
+
+    /// Top-level `.dirge/` directory under the project root.
+    pub fn dirge_dir(&self) -> PathBuf {
+        self.root.join(".dirge")
+    }
+
+    /// `.dirge/memory/` — declarative memory files (MEMORY.md, PITFALLS.md).
+    pub fn memory_dir(&self) -> PathBuf {
+        self.dirge_dir().join("memory")
+    }
+
+    /// `.dirge/skills/` — procedural skill definitions with SKILL.md files.
+    pub fn skills_dir(&self) -> PathBuf {
+        self.dirge_dir().join("skills")
+    }
+
+    /// `.dirge/sessions/` — SQLite session database and transcripts.
+    pub fn sessions_dir(&self) -> PathBuf {
+        self.dirge_dir().join("sessions")
+    }
+
+    /// `.dirge/sessions/state.db` — the FTS5-backed session database.
+    pub fn session_db_path(&self) -> PathBuf {
+        self.sessions_dir().join("state.db")
+    }
+
+    /// `.dirge/memory/<name>` — a specific memory file.
+    pub fn memory_file(&self, name: &str) -> PathBuf {
+        self.memory_dir().join(name)
+    }
+
+    /// `.dirge/config.yaml` — optional per-project dirge configuration.
+    pub fn config_path(&self) -> PathBuf {
+        self.dirge_dir().join("config.yaml")
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    /// In the dirge repo itself, `find_git_root` from the current
+    /// working directory should resolve to the repo root (where
+    /// `.git/` actually lives).
+    #[test]
+    fn find_git_root_in_this_repo() {
+        let cwd = std::env::current_dir().unwrap();
+        let root = find_git_root(&cwd);
+        assert!(
+            root.join(".git").is_dir(),
+            "expected {root:?} to contain .git/"
+        );
+    }
+
+    /// `/tmp` has no `.git/` — should return `/tmp` unchanged.
+    #[test]
+    fn find_git_root_falls_back_to_cwd_outside_repo() {
+        let tmp = std::env::temp_dir();
+        let root = find_git_root(&tmp);
+        assert_eq!(root, tmp);
+    }
+
+    /// `DIRGE_PROJECT_ROOT` wins over auto-detection.
+    #[test]
+    fn env_override_wins_over_git_detection() {
+        let tmp = std::env::temp_dir();
+        unsafe { std::env::set_var("DIRGE_PROJECT_ROOT", tmp.to_str().unwrap()) };
+        // Even though we're in the dirge repo, the env var wins.
+        let cwd = std::env::current_dir().unwrap();
+        let root = project_root(&cwd);
+        assert_eq!(root, tmp);
+        unsafe { std::env::remove_var("DIRGE_PROJECT_ROOT") };
+    }
+
+    /// An env var pointing to a non-existent directory is ignored
+    /// (graceful fallback to git detection).
+    #[test]
+    fn env_override_ignores_missing_directory() {
+        unsafe { std::env::set_var("DIRGE_PROJECT_ROOT", "/nonexistent/dirge/project/root") };
+        let cwd = std::env::current_dir().unwrap();
+        let root = project_root(&cwd);
+        // Should fall through to git detection, not use the bogus path.
+        assert_ne!(root, PathBuf::from("/nonexistent/dirge/project/root"));
+        unsafe { std::env::remove_var("DIRGE_PROJECT_ROOT") };
+    }
+
+    /// All subdirectory accessors nest under `.dirge/`.
+    #[test]
+    fn subdirs_are_under_dirge_dir() {
+        let cwd = std::env::current_dir().unwrap();
+        let paths = ProjectPaths::new(&cwd);
+        let dirge = paths.dirge_dir();
+
+        assert!(paths.memory_dir().starts_with(&dirge));
+        assert!(paths.skills_dir().starts_with(&dirge));
+        assert!(paths.sessions_dir().starts_with(&dirge));
+        assert!(paths.config_path().starts_with(&dirge));
+    }
+
+    /// `session_db_path` points into `sessions/` and ends with `state.db`.
+    #[test]
+    fn session_db_is_in_sessions_dir() {
+        let cwd = std::env::current_dir().unwrap();
+        let paths = ProjectPaths::new(&cwd);
+        let db = paths.session_db_path();
+        assert!(db.starts_with(paths.sessions_dir()));
+        assert!(db.ends_with("state.db"));
+    }
+
+    /// `memory_file("MEMORY.md")` points to `.dirge/memory/MEMORY.md`.
+    #[test]
+    fn memory_file_is_in_memory_dir() {
+        let cwd = std::env::current_dir().unwrap();
+        let paths = ProjectPaths::new(&cwd);
+        let f = paths.memory_file("MEMORY.md");
+        assert_eq!(f.file_name().unwrap(), "MEMORY.md");
+        assert!(f.starts_with(paths.memory_dir()));
+    }
+}

src/extras/mod.rs

@@ -10,4 +10,5 @@ pub mod mcp;
 #[cfg(feature = "acp")]
 pub mod acp;
 
+pub mod dirge_paths;
 pub mod memory;

src/permission/checker.rs

@@ -1504,10 +1504,11 @@ mod tests {
             CheckResult::Allowed
         ));
         // The edit alias MUST also match — this is what enforce() checks.
-        assert!(matches!(
-            checker.check_path("edit", "/probe/src/main.rs"),
-            CheckResult::Allowed,
-        ),
+        assert!(
+            matches!(
+                checker.check_path("edit", "/probe/src/main.rs"),
+                CheckResult::Allowed,
+            ),
             "edit alias must reflect write session-allowlist entry"
         );
 
@@ -1518,16 +1519,18 @@ mod tests {
             Some(std::path::PathBuf::from("/cwd-off-test-axis")),
         );
         checker2.add_session_allowlist("edit".to_string(), "/probe/src/**");
-        assert!(matches!(
-            checker2.check_path("write", "/probe/src/main.rs"),
-            CheckResult::Allowed,
-        ),
+        assert!(
+            matches!(
+                checker2.check_path("write", "/probe/src/main.rs"),
+                CheckResult::Allowed,
+            ),
             "write must reflect edit session-allowlist entry"
         );
-        assert!(matches!(
-            checker2.check_path("apply_patch", "/probe/src/main.rs"),
-            CheckResult::Allowed,
-        ),
+        assert!(
+            matches!(
+                checker2.check_path("apply_patch", "/probe/src/main.rs"),
+                CheckResult::Allowed,
+            ),
             "apply_patch must reflect edit session-allowlist entry"
         );
 
@@ -1538,10 +1541,11 @@ mod tests {
             Some(std::path::PathBuf::from("/cwd-off-test-axis")),
         );
         checker3.add_session_allowlist("apply_patch".to_string(), "/probe/src/**");
-        assert!(matches!(
-            checker3.check_path("edit", "/probe/src/main.rs"),
-            CheckResult::Allowed,
-        ),
+        assert!(
+            matches!(
+                checker3.check_path("edit", "/probe/src/main.rs"),
+                CheckResult::Allowed,
+            ),
             "edit must reflect apply_patch session-allowlist entry"
         );
 
@@ -1552,10 +1556,11 @@ mod tests {
             Some(std::path::PathBuf::from("/cwd-off-test-axis")),
         );
         checker4.load_session_allowlist(&[("write".to_string(), "/probe/src/**".to_string())]);
-        assert!(matches!(
-            checker4.check_path("edit", "/probe/src/main.rs"),
-            CheckResult::Allowed,
-        ),
+        assert!(
+            matches!(
+                checker4.check_path("edit", "/probe/src/main.rs"),
+                CheckResult::Allowed,
+            ),
             "load_session_allowlist must also mirror write→edit"
         );
 

src/provider/mod.rs

@@ -655,7 +655,9 @@ impl AnyAgent {
         self,
         prompt: String,
         history: Vec<Message>,
-        steering_queue: Option<std::sync::Arc<std::sync::Mutex<std::collections::VecDeque<String>>>>,
+        steering_queue: Option<
+            std::sync::Arc<std::sync::Mutex<std::collections::VecDeque<String>>>,
+        >,
     ) -> AgentRunner {
         use crate::agent::agent_loop::{
             LoopSpawnConfig, loop_tool_to_rig_definition, retrying_stream_fn,

src/ui/mod.rs

@@ -29,7 +29,6 @@ mod tree;
 mod tui;
 mod wrap;
 
-
 use compact_str::CompactString;
 use crossterm::event;
 use crossterm::event::{KeyCode, KeyModifiers, MouseButton, MouseEventKind};