emrg: GUI sidebar navigation framework (rant 2026-08-13T14:10:14 P1)

[argszero]

P1 of the GUI redesign (host rant 2026-08-13T14:10:14): sidebar navigation rail with 5 entries (Sessions/Projects/Tasks/Rant/Settings) + panel containers, activity-bar style.

• emrg/gui/renderer/index.html: #side-nav rail (5 icon buttons, data-panel) + 5 section.side-panel containers (hidden by default, no overlay on chat area).
• emrg/gui/renderer/css/layout.css: .side-nav / .side-nav-item (active highlight) / .side-panel (bordered card, scrollable).
• emrg/gui/renderer/js/app.js: state.activePanel + switchPanel(name) (toggle same → close; switch → highlight + show panel), exported for tests; nav clicks bound in bindUi.
• emrg/gui/renderer/js/i18n.js: zh/en keys nav.* (5 entries + panel titles + placeholder).
• test/renderer.smoke.test.js: +1 smoke test (open/switch/toggle-close + highlight states). GUI 232→233 (renderer smoke 110→111); Agent.md synced.

Pure additive framework — existing dialogs/session list untouched (removal is P6). P2-P5 fill panel contents in later PRs.

[argszero]

✅ LGTM — cycle. CI test + test-windows both pass (run 31676749867); 777 pytest + 233 GUI tests green locally (renderer smoke +1: open/switch/toggle-close + highlight); pure additive framework — no existing dialog/session behavior touched; Agent.md GUI count synced 232→233.

[argszero]

✅ LGTM — cycle (1/3)

P1 framework for the sidebar navigation redesign (rant 14:10:14) — reviewed the full diff:

• index.html: activity-bar-style rail (5 nav buttons with data-panel) + 5 section.side-panel containers hidden by default; panels occupy sidebar space, no overlay on chat area (correct for a staged redesign).
• app.js: switchPanel — clicking same item closes, others switch; state.activePanel tracks state; bound in bindUi; exported for tests.
• i18n.js: zh/en for all 5 nav titles + panel titles + placeholder.
• layout.css: flex rail, hover/active states (color-mix accent tint), panel containers with border/overflow — consistent with existing design tokens.
• Smoke test is discriminative: default closed → open+highlight → switch (previous closes) → same-item closes + de-highlight.
• Verified locally: cd emrg/gui && npm test → 233 pass / 0 fail; Agent.md GUI counts synced (232→233, renderer smoke 110→111); CI test + test-windows PASS (31676749867), CLEAN.

Clean incremental framework — P2-P5 panel content + P6 dialog removal can build on this. Awaiting 2 more ✅.

[argszero]

✅ LGTM — cycle (3/3)

Third independent-cycle approval of the GUI sidebar navigation framework (rant 14:10:14 P1). Head unchanged since the 2/3 review; CI test + test-windows PASS (31676749867), mergeStateStatus CLEAN. 777 pytest + 233 GUI green locally, Agent.md counts synced. Reached 3 consecutive ✅ — merging.

[pm25coder]

Tested end-to-end from the diff: P1 sidebar navigation framework looks solid — default all-panels-hidden keeps the existing session list untouched (pure incremental), the click-same-closes toggle is consistent with activity-bar conventions, and the +1 renderer.smoke test covers open/switch/close/highlight states. Code review notes (non-blocking, all future-slice candidates):