Add double-click rename on master session rows

[dgershman]

Summary

• Double-clicking an extra Manager session row in the sidebar now enters inline-rename mode, matching the right-click → Rename behavior.
• Implemented as a .simultaneousGesture(TapGesture(count: 2)) on ManagerSessionRow so single-click selection still fires; the second click flips editingSessionID = session.id to reuse the existing rename machinery (focus, Enter/blur commit, Escape cancel).
• Scoped to rows that already expose the Rename context-menu item — primary manager row and work sessions are untouched, no regression to existing double-click behavior.

Test plan

• Launch Crow; create or pick an extra Manager session.
• Double-click the row → TextField appears, focused.
• Type a new name, press Enter → rename commits.
• Double-click again, press Escape → cancels, original name preserved.
• Double-click again, click outside → blur commits.
• Right-click → Rename still works (no regression).
• Double-click on the primary manager row, ticket board, and a work session → unchanged behavior.

Closes #415

🐦‍⬛ Generated with Claude Code, orchestrated by Crow

[dhilgaertner]

Code & Security Review

Critical Issues

None.

Security Review

Strengths:

• Pure local SwiftUI gesture change — no authentication, input parsing, network, or persistence surface touched.
• Rename ultimately flows through the existing appState.onRenameSession? path with the same trimmingCharacters / empty-guard logic in commitRename(); no new trust boundary introduced.

Concerns:

• None.

Code Quality

• Correct scoping (verified). The double-click gesture lives on ManagerSessionRow, and editingManagerID is bound only to that row (SessionListView.swift:84) — the single row type that already exposes the "Rename" context-menu item (SessionListView.swift:88-93). The primary manager row (ManagerReviewsAllowListRow) and work-session rows (SessionRow) never receive the gesture, so the no-regression claim holds.
• Sound mechanism. .simultaneousGesture(TapGesture(count: 2)) preserves the Button's single-click selection while the second click sets editingSessionID = session.id. The existing .onChange(of: editingSessionID) (SessionListView.swift:494-499) seeds editingName and raises focus, and Enter/blur/Escape reuse the established commit/cancel machinery — no duplicated logic.
• Build note: swift build fails in this review worktree only because the local GhosttyKit.xcframework binary artifact isn't checked out — an environmental issue unrelated to this 5-line diff (which touches SessionListView.swift exclusively).

Summary Table

Color	Meaning	Verdict effect
Red	Must fix	Request changes
Yellow	Should fix	Request changes
Green	Consider	Approve allowed

Recommendation: Approve — driven by [0 Red, 0 Yellow, 0 Green] findings. Minimal, correctly scoped change that cleanly reuses the existing inline-rename machinery.

🐦‍⬛ Reviewed by Crow via Claude Code