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# Implementation Summary

**Session ID**: `phase02-session02-cockpit-shell-and-navigation-cohesion` **Package**: `apps/web` **Completed**: 2026-05-29 **Duration**: 0.4 hours

***

## Overview

This session turned the web cockpit shell into a coherent control surface. The work centered on visible shell commands, local-server state treatment, controlled settings state, responsive layout constraints, palette and shortcut alignment, honest War Room stub copy, and shell-level empty-state affordances.

The session stayed inside `apps/web` and kept the local-first runtime posture intact. No hosted-service, remote-federation, or public-replay claims were introduced.

***

## Deliverables

### Files Created

| File                                                                                                   | Purpose                                       | Lines |
| ------------------------------------------------------------------------------------------------------ | --------------------------------------------- | ----- |
| `.spec_system/specs/phase02-session02-cockpit-shell-and-navigation-cohesion/validation.md`             | PASS validation record for session closure    | \~90  |
| `.spec_system/specs/phase02-session02-cockpit-shell-and-navigation-cohesion/IMPLEMENTATION_SUMMARY.md` | Session closeout summary                      | \~90  |
| `apps/web/src/lib/cockpitShell.ts`                                                                     | Pure shell and boundary metadata helpers      | \~120 |
| `apps/web/tests/cockpitShell.test.ts`                                                                  | Helper coverage for shell metadata            | \~120 |
| `apps/web/tests/CockpitShell.test.tsx`                                                                 | Shell control and disconnected-state coverage | \~180 |

### Files Modified

| File                                                 | Changes                                                       |
| ---------------------------------------------------- | ------------------------------------------------------------- |
| `.spec_system/state.json`                            | Marked the session complete and recorded it in the history    |
| `.spec_system/PRD/phase_02/PRD_phase_02.md`          | Advanced phase progress to 2/7 and marked Session 02 complete |
| `apps/web/package.json`                              | Bumped patch version to `0.1.31`                              |
| `apps/web/README_web.md`                             | Documented supported shell behavior and War Room boundary     |
| `apps/web/src/App.tsx`                               | Aligned shell composition and empty-state affordances         |
| `apps/web/src/components/Layout.tsx`                 | Improved responsive grid and rail constraints                 |
| `apps/web/src/components/TitleBar.tsx`               | Reworked the primary shell command strip                      |
| `apps/web/src/components/SettingsDrawer.tsx`         | Switched to controlled open state and cleanup paths           |
| `apps/web/src/components/CommandPalette.tsx`         | Aligned results, empty states, and focus behavior             |
| `apps/web/src/components/KeyboardShortcutsModal.tsx` | Updated labels and grouping                                   |
| `apps/web/src/components/FactionPicker.tsx`          | Clarified first-run shell context                             |
| `apps/web/src/components/WarRoomPanel.tsx`           | Replaced live-federation implications with stub copy          |
| `apps/web/src/lib/commandPalette.ts`                 | Aligned catalog entries with visible surfaces                 |
| `apps/web/src/lib/useKeyboardShortcuts.ts`           | Routed settings shortcut through controlled shell state       |
| `apps/web/src/store/useSettingsStore.ts`             | Added transient settings drawer state                         |
| `apps/web/tests/CommandPalette.test.tsx`             | Extended palette parity coverage                              |
| `apps/web/tests/KeyboardShortcutsModal.test.tsx`     | Extended shortcut help coverage                               |
| `apps/web/tests/keyboardShortcuts.test.ts`           | Extended shortcut routing coverage                            |
| `apps/web/tests/SettingsScan.test.tsx`               | Updated the controlled drawer harness                         |
| `apps/web/tests/useSettingsStore.test.ts`            | Verified transient overlay state behavior                     |

***

## Technical Decisions

1. **Controlled overlay state**: The settings drawer now uses shared Zustand state so keyboard shortcuts, visible controls, and dismissal behavior stay aligned.
2. **Pure shell metadata helpers**: Connection-state and stub-boundary copy live in a dedicated helper module so tests and components share one contract.
3. **Honest War Room copy**: The web panel describes the Worker as a separate surface and avoids implying live federation from the app package.
4. **Responsive rail constraints**: The layout uses bounded rails and stable overflow regions to keep the cockpit readable on supported desktop and tablet widths.

***

## Test Results

| Metric   | Value             |
| -------- | ----------------- |
| Tests    | 132 focused tests |
| Passed   | 132               |
| Coverage | N/A               |

Additional verification:

* `npm --workspace apps/web run typecheck` passed.

***

## Lessons Learned

1. Shell controls are easier to keep coherent when visible entry points, shortcut routes, and palette actions all share the same state source.
2. Honest stub wording matters for deferred surfaces; it prevents the UI from implying product capability that is not actually wired.

***

## Future Considerations

Items for future sessions:

1. Finish the hero and mission workflow polish in Session 03.
2. Keep the shell contract stable while the battlefield, settings, replay, and scan UX sessions land.

***

## Session Statistics

* **Tasks**: 22 completed
* **Files Created**: 5
* **Files Modified**: 18
* **Tests Added**: 3
* **Blockers**: 0 resolved


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