> For the complete documentation index, see [llms.txt](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/.spec_system/archive/sessions/phase31-session05-pages-build-and-deployment-scaffold/tasks.md).

# Task Checklist

**Session ID**: `phase31-session05-pages-build-and-deployment-scaffold` **Total Tasks**: 16 **Estimated Duration**: 3-4 hours **Created**: 2026-06-24

***

Legend: `[x]` completed; `[ ]` pending; `[P]` parallelizable; `[SNNMM]` session ref; `TNNN` task ID.

***

## Progress Summary

| Metric              | Value   |
| ------------------- | ------- |
| Tasks Completed     | 16 / 16 |
| Estimated Remaining | 0 hours |
| Blockers            | 0       |

***

## Setup (3 tasks)

* [x] T001 \[S3105] Verify Phase 31 Session 05 prerequisites, existing demo-pages output shape, and ignored `demo-website/dist` state (`.spec_system/PRD/phase_31/session_05_pages_build_and_deployment_scaffold.md`)
* [x] T002 \[S3105] Confirm committed public demo fixtures and local-only snapshot boundary before wiring Pages build commands (`demo-website/public/demo/live-data.snapshot.json`)
* [x] T003 \[S3105] Review current package and Worker deployment scripts so Pages scripts remain independent (`package.json`)

***

## Foundation (5 tasks)

* [x] T004 \[S3105] \[P] Add Cloudflare Pages SPA fallback source file (`demo-website/public/_redirects`)
* [x] T005 \[S3105] \[P] Add conservative static security and cache headers source file (`demo-website/public/_headers`)
* [x] T006 \[S3105] Create Pages demo build assembly unit tests for success and failure-path cases (`scripts/lib/__tests__/pages-demo-build.test.ts`)
* [x] T007 \[S3105] Implement Pages output path constants, required-file checks, and explicit error mapping (`scripts/lib/pages-demo-build.ts`)
* [x] T008 \[S3105] Implement deterministic public-file copy helpers with idempotency protection, transaction boundaries, and compensation on failure (`scripts/lib/pages-demo-build.ts`)

***

## Implementation (5 tasks)

* [x] T009 \[S3105] Implement client output promotion and server artifact pruning with deterministic cleanup of generated-only files (`scripts/lib/pages-demo-build.ts`)
* [x] T010 \[S3105] Add the assembly CLI with validated inputs and non-zero failure exits (`scripts/demo/assemble-pages-dist.ts`)
* [x] T011 \[S3105] Wire `demo:build:pages` and `demo:preview:pages` scripts without invoking `demo:snapshot` or Worker deploy commands (`package.json`)
* [x] T012 \[S3105] Update Pages demo documentation with Git settings, `BUN_VERSION=1.3.14`, output directory, direct upload command, static-only constraints, and Worker separation (`demo-website/README.md`)
* [x] T013 \[S3105] Verify repeated build assembly behavior against an existing ignored output directory and keep generated output uncommitted (`demo-website/dist`)

***

## Testing (3 tasks)

* [x] T014 \[S3105] Run focused unit and script type checks for the Pages build scaffold (`scripts/lib/__tests__/pages-demo-build.test.ts`)
* [x] T015 \[S3105] Run `bun run demo:build:pages` and verify top-level `index.html`, `_redirects`, `_headers`, and `/demo/*` output (`demo-website/dist/index.html`)
* [x] T016 \[S3105] Run or start `bun run demo:preview:pages`, record static preview behavior, and validate ASCII/LF plus diff hygiene (`.spec_system/specs/phase31-session05-pages-build-and-deployment-scaffold/implementation-notes.md`)

***

## Completion Checklist

* [x] All tasks marked `[x]`
* [x] All tests and checks passing
* [x] All files ASCII-encoded with LF line endings
* [x] implementation-notes.md updated
* [x] Ready for `implement` to hand off to `creview`

***

## Next Steps

Run the `creview` workflow step.


---

# 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. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/.spec_system/archive/sessions/phase31-session05-pages-build-and-deployment-scaffold/tasks.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.