tracking: project name detection resolves wrong directory in monorepos, worktrees, and submodules

[thedotmack]

Root Cause

Project name resolution has three related failure modes: (1) in monorepos/subdirectories, the git root is used instead of the cwd basename, silently losing context after upgrading; (2) worktree observations accumulate under a parent/leaf compound key, and the one-shot .cwd-remap-applied-v1 migration misses worktrees created afterward, orphaning them when the worktree is deleted; (3) sessions inside a git submodule resolve to the empty submodule leaf project rather than the parent repo, showing the empty-state banner despite rich history.

Tracked Items

Issues

• Closes Project detection uses git root instead of working directory, causing issues in monorepos/subdirectories #2882 — Project detection uses git root instead of working directory, causing issues in monorepos/subdirectories #2882
• Closes Worktree observations orphaned by one-shot .cwd-remap-applied-v1 migration; unreachable after the worktree is removed (v13.3.0) #2864 — Worktree observations orphaned by one-shot .cwd-remap-applied-v1 migration; unreachable after the worktree is removed (v13.3.0) #2864
• Closes Submodule cwd resolves to empty leaf project — "no memory yet" despite parent repo history #2842 — Submodule cwd resolves to empty leaf project — "no memory yet" despite parent repo history #2842

PRs

• Related PR fix(sqlite): make cwd-remap reconciliation idempotent to fix orphaned worktree observations (closes #2864) #2883 — fix(sqlite): make cwd-remap reconciliation idempotent to fix orphaned worktree observations (closes #2864) #2883
• Related PR fix(context): fold submodule cwd sessions into the parent repo memory (closes #2842) #2856 — fix(context): fold submodule cwd sessions into the parent repo memory (closes #2842) #2856
• Related PR fix(project-name): support git-root project names #2665 — fix(project-name): support git-root project names #2665

Resolution

This is the canonical tracking issue for this root cause. Individual issues and PRs listed above will be closed in favor of this one.