huskies: merge 1186 story compact chat command: distill session context deterministically, then reset with a seed

2026-07-17 12:05:04 +00:00
parent b241661941
commit 043c77f077
29 changed files with 1051 additions and 6 deletions
@@ -0,0 +1,65 @@
+//! Resolves the on-disk path to a Claude Code session transcript JSONL file.
+
+use std::path::{Path, PathBuf};
+
+/// Resolve the path to a Claude Code session transcript.
+///
+/// Claude Code stores each session's transcript at
+/// `$HOME/.claude/projects/<mangled-cwd>/<session_id>.jsonl`, where
+/// `<mangled-cwd>` is the absolute working directory with every `/` and `.`
+/// replaced by `-` (e.g. `/workspace/.huskies/worktrees/1186` becomes
+/// `-workspace--huskies-worktrees-1186`).
+pub fn transcript_path(cwd: &Path, session_id: &str) -> PathBuf {
+    let home = std::env::var("HOME").unwrap_or_else(|_| "/home/huskies".to_string());
+    transcript_path_under_home(Path::new(&home), cwd, session_id)
+}
+
+/// Same as [`transcript_path`] but takes an explicit `$HOME` directory,
+/// keeping the path-joining logic testable without mutating process env vars.
+fn transcript_path_under_home(home: &Path, cwd: &Path, session_id: &str) -> PathBuf {
+    let mangled = mangle_cwd(&cwd.to_string_lossy());
+    home.join(".claude")
+        .join("projects")
+        .join(mangled)
+        .join(format!("{session_id}.jsonl"))
+}
+
+/// Replace every `/` and `.` in an absolute path string with `-`, matching
+/// the directory-naming convention Claude Code uses under `~/.claude/projects/`.
+fn mangle_cwd(cwd: &str) -> String {
+    cwd.chars()
+        .map(|c| if c == '/' || c == '.' { '-' } else { c })
+        .collect()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn mangles_worktree_path_matching_observed_convention() {
+        // Verified against this very worktree's own transcript directory.
+        assert_eq!(
+            mangle_cwd("/workspace/.huskies/worktrees/1186"),
+            "-workspace--huskies-worktrees-1186"
+        );
+    }
+
+    #[test]
+    fn mangles_simple_home_path() {
+        assert_eq!(mangle_cwd("/home/huskies"), "-home-huskies");
+    }
+
+    #[test]
+    fn transcript_path_joins_home_projects_dir_and_session_file() {
+        let path = transcript_path_under_home(
+            Path::new("/home/testuser"),
+            Path::new("/workspace/proj"),
+            "abc-123",
+        );
+        assert_eq!(
+            path,
+            PathBuf::from("/home/testuser/.claude/projects/-workspace-proj/abc-123.jsonl")
+        );
+    }
+}