> 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/phase16-session02-performance-and-image-optimization/tasks.md).

# Task Checklist

**Session ID**: `phase16-session02-performance-and-image-optimization` **Total Tasks**: 20 **Estimated Duration**: 3-4 hours **Created**: 2026-06-02

***

## Legend

* `[x]` = Completed
* `[ ]` = Pending
* `[P]` = Parallelizable (can run with other \[P] tasks)
* `[S1602]` = Session reference (16=phase number, 02=session number)
* `TNNN` = Task ID

***

## Progress Summary

| Category       | Total  | Done   | Remaining |
| -------------- | ------ | ------ | --------- |
| Setup          | 3      | 3      | 0         |
| Foundation     | 5      | 5      | 0         |
| Implementation | 8      | 8      | 0         |
| Testing        | 4      | 4      | 0         |
| **Total**      | **20** | **20** | **0**     |

***

## Setup (3 tasks)

Initial configuration and environment preparation.

* [x] T001 \[S1602] Verify Phase 16 Session 02 prerequisites, completed Session 01 dependency, package scripts, Node baseline, and launch image availability (`.spec_system/PRD/phase_16/session_02_performance_and_image_optimization.md`)
* [x] T002 \[S1602] Inventory source assets, public pass-through files, media registry entries, font references, browser scripts, and high-cost CSS effects (`.spec_system/specs/phase16-session02-performance-and-image-optimization/implementation-notes.md`)
* [x] T003 \[S1602] Record baseline `public-website/dist`, `_astro`, route HTML, CSS, and large asset sizes with fixed/deferred payload placeholders (`.spec_system/specs/phase16-session02-performance-and-image-optimization/implementation-notes.md`)

***

## Foundation (5 tasks)

Core structures and base implementations.

* [x] T004 \[S1602] Review and tune website media registry metadata, loading priority, fallback links, conditional status, and high-byte asset notes with types matching declared contract and exhaustive key handling (`public-website/src/lib/media.ts`)
* [x] T005 \[S1602] Harden optimized media rendering defaults for responsive widths, sizes, quality, decoding, fit, alt enforcement, reduced-motion fallback, and distortion-safe output (`public-website/src/components/media/OptimizedMedia.astro`)
* [x] T006 \[S1602] \[P] Confirm public pass-through asset policy for favicon, robots, manifest, and press files with no untracked launch downloads or bypassed content images (`public-website/public/press/README.md`)
* [x] T007 \[S1602] \[P] Document font strategy, third-party font request status, public asset policy, and first-launch performance constraints without adding analytics or hosted services (`public-website/README_public-website.md`)
* [x] T008 \[S1602] \[P] Review mobile navigation script necessity, event lifecycle, static-boundary behavior, and pagehide cleanup with cleanup on scope exit for acquired timers/listeners where practical (`public-website/src/components/navigation/MobileNavigation.astro`)

***

## Implementation (8 tasks)

Main feature implementation.

* [x] T009 \[S1602] Tune first-viewport brand media usage for eager loading, bounded generated widths, aspect-ratio stability, and no distorted or duplicate high-priority image output (`public-website/src/components/marketing/HeroCockpit.astro`)
* [x] T010 \[S1602] Tune press asset previews for responsive sizes, provenance captions, conditional high-byte showcase behavior, and reduced-motion fallback visibility (`public-website/src/components/marketing/PressAssetGrid.astro`)
* [x] T011 \[S1602] Review press asset descriptors, download states, high-byte operator-lineup copy, and launch blocker language with explicit conditional media status (`public-website/src/data/company.ts`)
* [x] T012 \[S1602] Trim global decorative CSS cost, font fallback risk, continuous animation, blur, shadows, and repeated gradients while preserving reduced-motion behavior and tactical context (`public-website/src/styles/global.css`)
* [x] T013 \[S1602] Review skip-link script for lightweight focus behavior, hash updates, no runtime network/storage APIs, and no unnecessary client JavaScript beyond accessibility support (`public-website/src/components/navigation/SkipLink.astro`)
* [x] T014 \[S1602] Review package scripts and dependency surface so typecheck/build/check commands cover optimization work without adding production dependencies or telemetry tools (`public-website/package.json`)
* [x] T015 \[S1602] Record final asset, route, CSS, and `_astro` size comparison with fixed items, accepted tradeoffs, and deferred launch blockers (`.spec_system/specs/phase16-session02-performance-and-image-optimization/implementation-notes.md`)
* [x] T016 \[S1602] Verify optimized images in built output for useful alt text, no distortion, expected generated variants, deterministic loading, and reduced-motion fallback behavior (`.spec_system/specs/phase16-session02-performance-and-image-optimization/implementation-notes.md`)

***

## Testing (4 tasks)

Verification and quality assurance.

* [x] T017 \[S1602] Run public website typecheck and resolve Astro or TypeScript failures without weakening media registry types (`public-website/package.json`)
* [x] T018 \[S1602] Run public website build and resolve generated image, route, CSS, or static output failures without adding server rendering or a Cloudflare adapter (`public-website/package.json`)
* [x] T019 \[S1602] Run deterministic public website link/static-boundary checker and resolve script, hosted-form, analytics, route, legal marker, or external destination failures (`public-website/package.json`)
* [x] T020 \[S1602] Confirm ASCII encoding, Unix LF line endings, static privacy boundaries, no undocumented third-party font request, and implementation-notes readiness for validate workflow (`.spec_system/specs/phase16-session02-performance-and-image-optimization/implementation-notes.md`)

***

## Completion Checklist

Before marking session complete:

* [x] All tasks marked `[x]`
* [x] All tests passing
* [x] All files ASCII-encoded
* [x] implementation-notes.md updated
* [x] Ready for the validate workflow step

***

## Next Steps

Run the implement workflow step to begin AI-led implementation.


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