> 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/phase04-session04-visual-promotion-tooling-and-budgets/implementation_summary.md). # Implementation Summary **Session ID**: `phase04-session04-visual-promotion-tooling-and-budgets` **Package**: `cross-cutting` **Completed**: 2026-05-29 **Duration**: 0.5 hours *** ## Overview This session added the Phase 04 visual promotion gate for FactionOS. It introduced a root `media:visual:check` command, explicit visual promotion config, repository-relative path validation, metadata and byte-budget enforcement, mirror and cache checks, docs reference validation, and tests covering the local promotion contract. The existing battlefield parity gate was preserved and aligned with the shared visual config so the six approved battlefield runtime assets remain authoritative while the broader visual inventory is validated separately. *** ## Deliverables ### Files Created | File | Purpose | Lines | | ----------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------- | ----- | | `scripts/media-visual-promotion-config.mjs` | Declared visual groups, budgets, docs references, cache rules, and safe path prefixes. | \~220 | | `scripts/check-visual-media-promotion.mjs` | Root CLI for visual inventory, metadata, budget, parity, docs, draft, and quarantine checks. | \~470 | | `tests/mediaVisualPromotion.test.ts` | Focused tests for config shape, path rejection, budget semantics, report codes, and blocked draft behavior. | \~220 | | `.spec_system/specs/phase04-session04-visual-promotion-tooling-and-budgets/validation.md` | Validation report for the completed session. | \~150 | | `.spec_system/specs/phase04-session04-visual-promotion-tooling-and-budgets/IMPLEMENTATION_SUMMARY.md` | Final closeout summary for the session. | \~120 | ### Files Modified | File | Changes | | --------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------- | | `package.json` | Added `media:visual:check` and bumped the patch version. | | `scripts/check-battlefield-assets.mjs` | Aligned battlefield parity inputs with the shared visual config while preserving existing checks. | | `scripts/README_scripts.md` | Documented the new visual promotion command and remediation steps. | | `docs/media-assets.md` | Documented the session 04 visual promotion flow and current blocker policy. | | `assets/README_assets.md` | Clarified promotion paths and the non-runtime draft boundary. | | `assets/generated/phase04/README.md` | Added the repository-relative draft manifest path. | | `docs/battlefield-3d.md` | Documented the quarantine or deferred context for one visual record. | | `public-demo/README_public-demo.md` | Updated cache version guidance and visual-gate notes. | | `vitest.config.ts` | Included top-level repository tests in the node Vitest project. | | `.spec_system/state.json` | Marked the session complete and updated phase history. | | `.spec_system/PRD/phase_04/PRD_phase_04.md` | Marked session 04 complete and advanced phase progress. | | `.spec_system/PRD/PRD.md` | Updated the Phase 04 status map entry for the completed visual promotion session. | | `.spec_system/specs/phase04-session04-visual-promotion-tooling-and-budgets/implementation-notes.md` | Recorded implementation progress, validation evidence, and closeout notes. | | `.spec_system/specs/phase04-session04-visual-promotion-tooling-and-budgets/tasks.md` | Marked all tasks complete and updated the session checklist. | *** ## Technical Decisions 1. **Explicit config over broad discovery**: The checker only validates declared paths and known media groups so quarantined or draft assets cannot slip into runtime promotion through filesystem scanning. 2. **Preserve battlefield parity as-is**: The existing six-asset battlefield gate remains authoritative, with shared config inputs used only to keep the budget and path metadata aligned. 3. **Stable report codes**: The checker emits deterministic issue codes and redacted details so failures stay actionable without exposing local absolute paths or provider secrets. *** ## Test Results | Metric | Value | | -------------------- | ------------------------------ | | Media visual check | Passed, 5 groups, 32 files | | Battlefield check | Passed, 6 assets | | Draft manifest check | Passed | | Focused Vitest | Passed, 9 tests | | Root tests | Passed, 122 files / 1923 tests | | Formatting and lint | Passed | *** ## Lessons Learned 1. Visual promotion gates work best when the asset inventory, docs references, and cache rules all come from one explicit config file. 2. Keeping the draft/non-runtime boundary explicit makes it much easier to validate conditional and blocked records without accidentally promoting them. *** ## Future Considerations 1. Session 05 should build on the current media inventory and add the browser audio runtime only with opt-in, lazy-loaded behavior. 2. Session 06 should keep public demo media parity aligned with the app-side promotion rules introduced here. *** ## Session Statistics * **Tasks**: 22 completed * **Files Created**: 5 * **Files Modified**: 14 * **Tests Added**: 1 * **Blockers**: 0 resolved --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. 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