Milestone 3.3: Overview #9

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opened 2026-07-24 03:22:36 +00:00 by david · 0 comments

david commented

2026-07-24 03:22:36 +00:00

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Overview

Implement back-switching behavior to auto-restore previous session when returning to main repo.

Acceptance Criteria

Track previous sessions in memory during pi process lifetime using worktreeSessionMap (Map<string, string>)
When switching TO a worktree: store current session file mapped to that worktree path
When switching TO the main repo: auto-restore the previous session if tracked
If no previous session tracked for main repo: stay in current session and track it

Implementation

const worktreeSessionMap = new Map<string, string>(); // worktree path -> session file
let mainRepoSessionFile: string | undefined;

// When switching TO a worktree:
worktreeSessionMap.set(targetPath, ctx.sessionManager.getSessionFile());

// When switching TO the main repo (detected by checking if target is the original cwd):
if (mainRepoSessionFile) {
  await ctx.switchSession(mainRepoSessionFile);
} else {
  // No previous session tracked — stay in current session
  mainRepoSessionFile = ctx.sessionManager.getSessionFile();
}

Validation

Start a session, switch to a worktree (create new session), then switch back to main — verify pi returns to the original session
Verify that the worktreeSessionMap is cleared on pi restart (stateless tools)

# Overview Implement back-switching behavior to auto-restore previous session when returning to main repo. ## Acceptance Criteria - [ ] Track previous sessions in memory during pi process lifetime using `worktreeSessionMap` (Map<string, string>) - [ ] When switching TO a worktree: store current session file mapped to that worktree path - [ ] When switching TO the main repo: auto-restore the previous session if tracked - [ ] If no previous session tracked for main repo: stay in current session and track it ## Implementation ```typescript const worktreeSessionMap = new Map<string, string>(); // worktree path -> session file let mainRepoSessionFile: string | undefined; // When switching TO a worktree: worktreeSessionMap.set(targetPath, ctx.sessionManager.getSessionFile()); // When switching TO the main repo (detected by checking if target is the original cwd): if (mainRepoSessionFile) { await ctx.switchSession(mainRepoSessionFile); } else { // No previous session tracked — stay in current session mainRepoSessionFile = ctx.sessionManager.getSessionFile(); } ``` ## Validation - Start a session, switch to a worktree (create new session), then switch back to main — verify pi returns to the original session - Verify that the `worktreeSessionMap` is cleared on pi restart (stateless tools)

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Reference: david/pi-worktrees#9

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