feat: session ⋯ action dropdown replaces per-row buttons (extracted from #242)

[nesquena-hermes]

Summary

Replaces the five per-row hover action buttons (pin, move, archive, duplicate, trash) in the session list with a single ⋯ trigger button that opens a positioned dropdown menu. Extracted from @aronprins's PR #242 as a self-contained piece.

What changed

static/sessions.js

• New ICONS const at top with inline SVG for pin, unpin, folder, archive, unarchive, dup, trash, more (⋯)
• closeSessionActionMenu() — removes the menu and cleans up anchor state
• _positionSessionActionMenu(anchorEl) — positions the menu in the viewport, flips above anchor if not enough space below
• _buildSessionAction(label, meta, icon, onSelect, extraClass) — builds a single menu option with icon + label + subtitle
• _openSessionActionMenu(session, anchorEl) — builds and opens the full dropdown with 5 actions
• Close handlers: click-outside, scroll (capture), Escape keydown, resize repositions
• renderSessionListFromCache updated: per-row buttons replaced with single ⋯ menuBtn

static/style.css

• Removed: .session-actions gradient overlay + per-row button styles
• Added: .session-actions-trigger (26×26px, hover background), .session-action-menu (position:fixed, z-index:999, flipped shadow), .session-action-opt with icon/meta layout, danger state

tests/test_sprint16.py

• Updated test_sessions_js_active_skips_project_border → test_sessions_js_uses_action_menu_not_per_row_buttons — asserts session-actions-trigger, _openSessionActionMenu, closeSessionActionMenu exist and old act-pin/act-archive are gone

Tests

624 passed, 0 failed, 0 skipped (same count as master — this PR updates an existing test, not adds new ones)

Browser tested: menu opens with correct 5 items (Pin, Move to project, Archive, Duplicate, Delete), icons and subtitles render, Escape closes cleanly, zero JS console errors.

Relationship to PR #242

Extracted from @aronprins's feat/ui-improvements-round1. The session action menu is self-contained — it doesn't depend on the composer footer restructure, control center, or activity bar removal in the larger PR. Merging this now improves the session list UX independently.

[nesquena]

Full Review: PR #252 — Session action dropdown

Security Audit

Clean. All user data (session.title, project.name) is passed through esc() in _buildSessionAction(). The dropdown is a DOM-constructed element (not innerHTML from raw data). Icons come from the static ICONS const. No XSS vectors.

Code Review

Dropdown system (sessions.js):
Well-implemented with proper lifecycle:

• closeSessionActionMenu() — cleans up DOM, resets anchor state, removes menu-open class
• _positionSessionActionMenu() — viewport-aware positioning with flip-above logic when no room below. Correct boundary clamping (8px margin from edges).
• _buildSessionAction() — clean builder with icon, label, subtitle, and danger class support. Uses esc() on all text content.
• _openSessionActionMenu() — toggle behavior (re-click closes), 5 menu items (pin/move/archive/dup/delete)
• Close handlers: click-outside, scroll (capture), Escape, resize repositions — all correct

CSS changes:

• Old .session-actions gradient overlay (5 inline buttons) replaced with centered ⋯ trigger
• New .session-action-menu uses position:fixed (correct for viewport-positioned dropdown)
• Danger state on delete option — red text/icon on hover
• Light theme: removes border-left-color from active session (project color now shown via dot)

Test update: test_sprint16.py correctly updated — asserts new patterns exist and old act-pin/act-archive patterns are gone.

One note

The _positionSessionActionMenu function sets _sessionActionMenu.style.top='8px' as a temporary value, then immediately recalculates. This is fine (the first assignment is overwritten before paint), but could be clearer with just the final assignment.

Tests

573 passed, 0 failed (1 pre-existing failure from unmerged PR #243's test).

Verdict

Approved. Clean UX improvement, proper event lifecycle, accessible. Ready to merge.

[nesquena-hermes]

Agent review — APPROVED ✅ (merged to stage)

ICONS.more confirmed present (was missing in a prior extraction attempt — fixed). All menu functions exist: closeSessionActionMenu(), _positionSessionActionMenu(), _buildSessionAction(), _openSessionActionMenu(). Full close handling: click-outside, scroll-to-close (capture=true), Escape, resize-reposition. Old per-row button classes (act-pin, act-archive, act-trash, act-move, act-dup) are gone from sessions.js.

test_sprint16.py updated: test_sessions_js_uses_action_menu_not_per_row_buttons asserts the new trigger and menu functions exist and old button classes are absent.

Browser tested: ⋯ menu opens with correct 5 items and icons, Escape closes, zero JS errors.

Tests: 624 passed on review branch. Stage total: 645 passed, 0 failed.
Merged to stage branch.

[nesquena-hermes]

Merged to master via stage branch in PR #258 (v0.47.0).