> For the complete documentation index, see [llms.txt](https://faction-os.gitbook.io/faction-os-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://faction-os.gitbook.io/faction-os-docs/.spec_system/archive/sessions/phase23-session07-scanner-and-golden-age-states/implementation-notes.md).

# Implementation Notes

**Session ID**: `phase23-session07-scanner-and-golden-age-states` **Package**: apps/web **Started**: 2026-07-05 21:04 **Last Updated**: 2026-07-05 21:25

***

## Session Progress

| Metric              | Value   |
| ------------------- | ------- |
| Tasks Completed     | 22 / 22 |
| Estimated Remaining | 0 hours |
| Blockers            | 0       |

***

## Session Summary

Implemented a battlefield scanner-state layer for Session 07. The battlefield now distinguishes scan-not-run, Dispatch Scouts, failed scan, Legion-present, mock drill, zero-hero, and Golden Age states using existing Quest Board state, ranked camps, visible heroes, and mock mode. Failed scanner snapshots no longer clear existing projection camps; successful clean snapshots still do.

**Final Checks**:

* `npm test -- apps/web/tests/battlefieldScannerState.test.ts apps/web/tests/Battlefield.test.tsx apps/web/tests/gameProjection.test.ts` - PASS, 66 tests passed.
* `npm --workspace @factionos/web run typecheck` - PASS.
* `npm run format:check` - PASS, 781 files checked.
* ASCII validation for touched files - PASS.
* CRLF validation for touched files - PASS.
* `git diff --check` - PASS.

**BQC Summary**:

* Resource cleanup: scout dispatch timer is cleared on scan stop and unmount.
* Contract alignment: scanner helper exhaustively handles current scan statuses and scan scopes.
* Product surface discipline: battlefield copy avoids raw issue details, roots, ignore patterns, diagnostics, paths, prompts, payloads, and configuration.

**Remaining Blockers**: none

***

## Checkpoints

### Checkpoint 1 - Foundation Complete

**Recorded**: 2026-07-05 21:12

* Completed T001-T008.
* Re-read spec objectives and success criteria; no scope drift found.
* Checks: Battlefield tests passed, helper tests passed, projection tests passed, and web typecheck passed.
* Next task at checkpoint: T009 create `ScannerStateLayer.tsx`.

### Checkpoint 2 - Battlefield Layer Wired

**Recorded**: 2026-07-05 21:18

* Completed T009-T016.
* Re-read spec success criteria; remaining work was component tests and final checks.
* Checks: web typecheck passed, Battlefield tests passed, helper/projection focused tests passed, and CSS format check passed after one formatting fix.
* Next task at checkpoint: T017 add Battlefield tests for Golden Age and scan-not-run behavior.

***

## Task Log

### Task T001 - Verify analyzer state, Phase 23 prerequisites, and Session 07 scope

**Completed**: 2026-07-05 21:04

**Notes**:

* Confirmed analyzer-selected session, Phase 23 PRD session file, package scope, prerequisites, and no database requirements.
* Confirmed Session 07 is presentation and guardrail scoped to `apps/web`.

**Files Changed**:

* `.spec_system/specs/phase23-session07-scanner-and-golden-age-states/implementation-notes.md` - created implementation log.

**Verification**:

* `analyze-project.sh --json` - PASS, current session `phase23-session07-scanner-and-golden-age-states`, phase 23, package `apps/web`.
* `check-prereqs.sh --json --env --package apps/web` - PASS, `overall: pass`.
* UI product-surface check: N/A.
* UI craft check: N/A.

### Task T002 - Inspect existing Quest Board scan status, projection reducer, and battlefield anchors

**Completed**: 2026-07-05 21:08

**Notes**:

* Confirmed `QuestBoardState` exposes normalized `scanStatus`, codebase issue counts, and `hasCanonicalSnapshot`.
* Confirmed Battlefield derives ranked camps from `gameProjection` and Quest Board cards.
* Confirmed failed-scan camp preservation belongs in `reduceSuggestionUpdate`.

**Files Changed**:

* `.spec_system/specs/phase23-session07-scanner-and-golden-age-states/implementation-notes.md` - recorded inspection evidence.

**Verification**:

* `rg -n "questBoard|scanStatus|suggestion_update|mockEnabled|gameProjection" ...` - PASS, anchors found.
* Targeted source inspection of `Battlefield.tsx`, `gameProjection.ts`, `questBoardModel.ts`, and `legionCamps.ts` - PASS.
* UI product-surface check: N/A.
* UI craft check: N/A.

### Task T003 - Prepare Battlefield test fixture helpers

**Completed**: 2026-07-05 21:06

**Notes**:

* Added helpers for scan status, canonical Quest Board snapshots, zero heroes, and mock mode.
* Made mock mode explicitly disabled in Battlefield test setup unless a test opts in.

**Files Changed**:

* `apps/web/tests/Battlefield.test.tsx` - added scanner fixture helpers.

**Verification**:

* `npm test -- apps/web/tests/Battlefield.test.tsx` - PASS, 20 tests passed.
* UI product-surface check: N/A.
* UI craft check: N/A.

### Task T004 - Create typed battlefield scanner-state classifier

**Completed**: 2026-07-05 21:07

**Notes**:

* Added `deriveBattlefieldScannerState` for scan-not-run, scouts-running, failed-scan, Golden Age, Legion-present, and drill states.
* Used exhaustive switches for current scan status and scope values.

**Files Changed**:

* `apps/web/src/lib/battlefieldScannerState.ts` - created pure view-model helper.

**Verification**:

* `npm --workspace @factionos/web run typecheck` - PASS.
* Targeted source inspection - PASS, known enum values are covered with `assertNever`.
* UI product-surface check: PASS, helper emits bounded product-facing labels only.
* UI craft check: N/A.

### Task T005 - Add pure scanner-state classification tests

**Completed**: 2026-07-05 21:09

**Notes**:

* Covered scan-not-run, Golden Age, running scouts, failed scan, Legion-present, drill, and zero-hero branches.
* Covered analysis and project running scopes.

**Files Changed**:

* `apps/web/tests/battlefieldScannerState.test.ts` - added pure-helper tests.

**Verification**:

* `npm test -- apps/web/tests/battlefieldScannerState.test.ts` - PASS, 7 tests passed.
* UI product-surface check: PASS.
* UI craft check: N/A.

### Task T006 - Add failed-scan camp preservation logic

**Completed**: 2026-07-05 21:10

**Notes**:

* Added a narrow guard in `reduceSuggestionUpdate` so failed scanner snapshots leave the current projection unchanged.
* Kept non-failed canonical snapshots on the existing reconciliation path.

**Files Changed**:

* `apps/web/src/lib/gameProjection.ts` - skipped camp reconciliation when `event.scanStatus.status === "failed"`.

**Verification**:

* `npm --workspace @factionos/web run typecheck` - PASS.
* Targeted reducer inspection - PASS, failed scans return before camp reconciliation.
* UI product-surface check: N/A.
* UI craft check: N/A.

### Task T007 - Add reducer regression coverage

**Completed**: 2026-07-05 21:11

**Notes**:

* Added regression proving a failed empty scan keeps the same projection and existing camp.
* Added paired successful clean snapshot assertion proving camps and sectors still clear.

**Files Changed**:

* `apps/web/tests/gameProjection.test.ts` - added failed-scan preservation and successful clean clearing regression.

**Verification**:

* `npm test -- apps/web/tests/gameProjection.test.ts` - PASS, 32 tests passed.
* UI product-surface check: N/A.
* UI craft check: N/A.

### Task T008 - Extend Battlefield scanner fixtures

**Completed**: 2026-07-05 21:11

**Notes**:

* Added `seedBattlefieldScannerFixtures` to seed Quest Board scan display, canonical state, projection camps, mock mode, reduced motion, and zero heroes.

**Files Changed**:

* `apps/web/tests/Battlefield.test.tsx` - added combined scanner battlefield fixture helper.

**Verification**:

* `npm test -- apps/web/tests/Battlefield.test.tsx` - PASS, 20 tests passed.
* UI product-surface check: N/A.
* UI craft check: N/A.

### Task T009 - Create scanner state presentation layer

**Completed**: 2026-07-05 21:14

**Notes**:

* Added `ScannerStateLayer` as a presentation-only overlay with stable test ids for all scanner states.
* Kept visible copy product-facing and diagnostic-free.

**Files Changed**:

* `apps/web/src/components/battlefield/ScannerStateLayer.tsx` - created scanner state layer.

**Verification**:

* `npm --workspace @factionos/web run typecheck` - PASS.
* UI product-surface check: PASS, no scanner roots, ignore patterns, paths, prompts, payloads, or diagnostics.
* UI craft check: PASS, compact board badges and stable z-index.

### Task T010 - Implement Dispatch Scouts and reduced-motion badge

**Completed**: 2026-07-05 21:14

**Notes**:

* Added motion scout treatment for normal running scans.
* Added reduced-motion static badge with equivalent information.

**Files Changed**:

* `apps/web/src/components/battlefield/ScannerStateLayer.tsx` - added scout motion and reduced-motion branches.

**Verification**:

* `npm --workspace @factionos/web run typecheck` - PASS.
* UI product-surface check: PASS.
* UI craft check: PASS, reduced-motion branch is not motion-only.

### Task T011 - Wire scouts-dispatched transition with cleanup

**Completed**: 2026-07-05 21:15

**Notes**:

* Added local `scoutsDispatched` state when scan status transitions into running.
* Cleared timer when scan stops and on component unmount.

**Files Changed**:

* `apps/web/src/components/battlefield/Battlefield.tsx` - added scouts-dispatched timer state and cleanup.

**Verification**:

* `npm test -- apps/web/tests/Battlefield.test.tsx` - PASS, 20 tests passed.
* `npm --workspace @factionos/web run typecheck` - PASS.
* UI product-surface check: PASS.
* UI craft check: PASS.
* BQC Fixes: Resource cleanup for scan dispatch timer in `Battlefield.tsx`.

### Task T012 - Integrate scanner-state derivation and layer render

**Completed**: 2026-07-05 21:15

**Notes**:

* Read `questBoard` from the game store and `mockEnabled` from settings.
* Derived scanner state from Quest Board state, ranked camp count, visible hero count, mock mode, and dispatch state.
* Rendered `ScannerStateLayer` after `CampLayer` and before hero tokens.

**Files Changed**:

* `apps/web/src/components/battlefield/Battlefield.tsx` - wired scanner-state selector and layer render.

**Verification**:

* `npm test -- apps/web/tests/Battlefield.test.tsx` - PASS, 20 tests passed.
* `npm --workspace @factionos/web run typecheck` - PASS.
* UI product-surface check: PASS.
* UI craft check: PASS.

### Task T013 - Render Golden Age and scan-not-run treatments

**Completed**: 2026-07-05 21:16

**Notes**:

* Added dedicated Golden Age and scan-not-run cards.
* Kept scanner configuration and diagnostics out of battlefield copy.

**Files Changed**:

* `apps/web/src/components/battlefield/ScannerStateLayer.tsx` - added settled scanner state rendering.
* `apps/web/src/components/battlefield/Battlefield.tsx` - renders layer with derived state.

**Verification**:

* `npm test -- apps/web/tests/battlefieldScannerState.test.ts` - PASS, 7 tests passed.
* `npm --workspace @factionos/web run typecheck` - PASS.
* UI product-surface check: PASS.
* UI craft check: PASS.

### Task T014 - Render failed-scan treatment

**Completed**: 2026-07-05 21:16

**Notes**:

* Added failed-scan state copy that preserves existing fronts and avoids new-progress claims.
* Paired presentation with failed-scan reducer guard.

**Files Changed**:

* `apps/web/src/components/battlefield/ScannerStateLayer.tsx` - added failed-scan branch.
* `apps/web/src/lib/gameProjection.ts` - preserves projection on failed scans.

**Verification**:

* `npm test -- apps/web/tests/battlefieldScannerState.test.ts apps/web/tests/gameProjection.test.ts` - PASS, 39 tests passed.
* Targeted failed-scan copy inspection - PASS.
* UI product-surface check: PASS.
* UI craft check: PASS.

### Task T015 - Render mock drill and zero-hero neutral copy

**Completed**: 2026-07-05 21:17

**Notes**:

* Added mock drill banner for visible camps when mock mode is enabled.
* Added zero-hero copy that says no local heroes are deployed without implying an army is present.

**Files Changed**:

* `apps/web/src/components/battlefield/ScannerStateLayer.tsx` - added mock-drill banner and zero-hero marker.

**Verification**:

* `npm test -- apps/web/tests/battlefieldScannerState.test.ts` - PASS, 7 tests passed.
* Targeted source inspection - PASS, zero-hero copy contains no army claim.
* UI product-surface check: PASS.
* UI craft check: PASS.

### Task T016 - Add scanner-state styles

**Completed**: 2026-07-05 21:18

**Notes**:

* Added tone-specific scanner cards, scout motion trails, reduced-motion suppression, mock-drill banner styling, zero-hero badge styling, and mobile constraints.

**Files Changed**:

* `apps/web/src/index.css` - added scanner-state styles and keyframes.

**Verification**:

* `npx biome format apps/web/src/index.css` - PASS after applying formatter.
* `npm test -- apps/web/tests/Battlefield.test.tsx` - PASS, 20 tests passed.
* UI product-surface check: PASS.
* UI craft check: PASS.

### Task T017 - Add Battlefield tests for Golden Age and scan-not-run

**Completed**: 2026-07-05 21:19

**Notes**:

* Added rendered coverage for canonical clean snapshot -> Golden Age.
* Added rendered coverage proving no canonical snapshot renders scan-not-run instead of Golden Age.

**Files Changed**:

* `apps/web/tests/Battlefield.test.tsx` - added Golden Age and scan-not-run tests.

**Verification**:

* `npm test -- apps/web/tests/Battlefield.test.tsx` - PASS, 22 tests passed.
* UI product-surface check: PASS, Golden Age copy omits scan roots, ignore patterns, and diagnostics.
* UI craft check: PASS.

### Task T018 - Add Battlefield tests for running scouts, failed scans, and reduced motion

**Completed**: 2026-07-05 21:20

**Notes**:

* Added rendered coverage for Dispatch Scouts running state with motion treatment.
* Added failed-scan coverage that keeps an existing camp marker visible.
* Added reduced-motion coverage proving the static scout badge appears and motion treatment is absent.

**Files Changed**:

* `apps/web/tests/Battlefield.test.tsx` - added running, failed-scan, and reduced-motion tests.

**Verification**:

* `npm test -- apps/web/tests/Battlefield.test.tsx` - PASS, 25 tests passed.
* UI product-surface check: PASS.
* UI craft check: PASS.

### Task T019 - Add Battlefield tests for zero-hero and mock drill

**Completed**: 2026-07-05 21:21

**Notes**:

* Added rendered zero-hero coverage with neutral scanner copy.
* Added rendered mock-drill coverage that labels visible mock camps as no durable progress.

**Files Changed**:

* `apps/web/tests/Battlefield.test.tsx` - added zero-hero and mock-drill tests.

**Verification**:

* `npm test -- apps/web/tests/Battlefield.test.tsx` - PASS, 27 tests passed.
* UI product-surface check: PASS.
* UI craft check: PASS.

### Task T020 - Run focused Vitest coverage

**Completed**: 2026-07-05 21:22

**Notes**:

* Ran the exact focused command for scanner helper, Battlefield, and projection reducer behavior.

**Files Changed**:

* `.spec_system/specs/phase23-session07-scanner-and-golden-age-states/implementation-notes.md` - recorded task evidence.

**Verification**:

* `npm test -- apps/web/tests/battlefieldScannerState.test.ts apps/web/tests/Battlefield.test.tsx apps/web/tests/gameProjection.test.ts` - PASS, 66 tests passed.
* UI product-surface check: PASS.
* UI craft check: PASS.

### Task T021 - Run web package typecheck

**Completed**: 2026-07-05 21:23

**Notes**:

* Ran package typecheck after all scanner state, Battlefield, reducer, CSS, and test changes.

**Files Changed**:

* `.spec_system/specs/phase23-session07-scanner-and-golden-age-states/implementation-notes.md` - recorded task evidence.

**Verification**:

* `npm --workspace @factionos/web run typecheck` - PASS.
* UI product-surface check: N/A.
* UI craft check: N/A.

### Task T022 - Run formatting plus ASCII/LF validation

**Completed**: 2026-07-05 21:25

**Notes**:

* Ran root format check, applied Biome formatting to touched web files, and reran root format check successfully.
* Validated ASCII-only content and absence of CRLF line endings for touched files.
* Reran focused tests and web typecheck after formatting.

**Files Changed**:

* `apps/web/src/components/battlefield/Battlefield.tsx` - Biome formatting.
* `apps/web/src/lib/battlefieldScannerState.ts` - Biome formatting.
* `apps/web/tests/Battlefield.test.tsx` - Biome formatting.
* `apps/web/tests/battlefieldScannerState.test.ts` - Biome formatting.
* `.spec_system/specs/phase23-session07-scanner-and-golden-age-states/implementation-notes.md` - recorded final evidence.

**Verification**:

* `npm run format:check` - PASS, 781 files checked.
* ASCII validation with `perl -ne 'if (/[^\\x00-\\x7F]/) { ... }' [touched files]` - PASS.
* `rg -nU $'\\r' [touched files]` - PASS, no CRLF found.
* `npm test -- apps/web/tests/battlefieldScannerState.test.ts apps/web/tests/Battlefield.test.tsx apps/web/tests/gameProjection.test.ts` - PASS, 66 tests passed.
* `npm --workspace @factionos/web run typecheck` - PASS.
* UI product-surface check: PASS.
* UI craft check: PASS.

***


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