> 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/phase15-session01-use-cases-hub-and-role-pages/implementation_summary.md).

# Implementation Summary

**Session ID**: `phase15-session01-use-cases-hub-and-role-pages` **Package**: `public-website` **Completed**: 2026-06-01 **Duration**: 3-4 hours

***

## Overview

Implemented the `/use-cases` hub and four role-specific use-case pages for the public website. The session centralized use-case copy and routes in typed package-local data, added reusable marketing components for the hub grid and role-page sections, and wired the new pages into site navigation and canonical route helpers.

***

## Deliverables

### Files Created

| File                                                            | Purpose                                                                       | Lines |
| --------------------------------------------------------------- | ----------------------------------------------------------------------------- | ----- |
| `public-website/src/data/use-cases.ts`                          | Typed use-case route metadata, role content, CTA targets, and boundary copy   | \~320 |
| `public-website/src/components/marketing/UseCaseGrid.astro`     | Accessible role-card hub grid and shared pain-point presentation              | \~220 |
| `public-website/src/components/marketing/UseCaseRolePage.astro` | Reusable role-page structure for problem, workflow, surfaces, proof, and CTAs | \~280 |
| `public-website/src/pages/use-cases/index.astro`                | Use-case hub route                                                            | \~170 |
| `public-website/src/pages/use-cases/engineering-teams.astro`    | Engineering teams role page                                                   | \~70  |
| `public-website/src/pages/use-cases/ai-platform-teams.astro`    | AI platform teams role page                                                   | \~70  |
| `public-website/src/pages/use-cases/founders.astro`             | Founders role page                                                            | \~70  |
| `public-website/src/pages/use-cases/power-users.astro`          | Power users role page                                                         | \~70  |

### Files Modified

| File                                        | Changes                                                                                  |
| ------------------------------------------- | ---------------------------------------------------------------------------------------- |
| `public-website/src/data/site.ts`           | Added use-case route constants and canonical URLs                                        |
| `public-website/src/data/navigation.ts`     | Added use-cases navigation reachability and switched link targets to site path constants |
| `public-website/package.json`               | Bumped the package patch version to `0.0.11`                                             |
| `.spec_system/PRD/PRD.md`                   | Marked Phase 15 as underway in the master PRD                                            |
| `.spec_system/PRD/phase_15/PRD_phase_15.md` | Marked session 01 complete and updated phase progress                                    |
| `.spec_system/state.json`                   | Marked the session complete and advanced phase state                                     |

***

## Technical Decisions

1. **Centralize use-case content in typed data**: This kept the hub, role pages, navigation targets, and boundary language consistent and reviewable.
2. **Reuse one role-page component**: The repeated problem/workflow/surfaces/proof/CTA layout stayed maintainable without duplicating page structure across four routes.
3. **Keep the site static**: The pages stayed within the package-local Astro static boundary with no runtime fetches, forms, or analytics additions.

***

## Test Results

| Metric   | Value               |
| -------- | ------------------- |
| Tests    | 4 validation checks |
| Passed   | 4                   |
| Coverage | N/A                 |

***

## Lessons Learned

1. Keep route constants centralized early when multiple pages share the same hub and navigation targets.
2. For static marketing pages, compact reusable components are preferable to duplicating section markup across route files.

***

## Future Considerations

Items for future sessions:

1. Extend the same data-driven route pattern to the remaining trust and conversion pages.
2. Revisit shared marketing section primitives if the number of audience-specific pages grows again.

***

## Session Statistics

* **Tasks**: 23 completed
* **Files Created**: 8
* **Files Modified**: 6
* **Tests Added**: 0
* **Blockers**: 1 resolved


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