Mobile Chat 9a — Citations & Cited Sources

Status: active — spec complete, ready for execution.

Sub-phase 9a of the deferred rich-chat work in ../05-pr-roadmap.md (the parent mobile-chat roadmap). Ports web's chat citations + cited-sources experience to the React Native app.

Artifacts

1. 01-research.md — requirement, clarifications, codebase + backend + web + industry findings, the three approaches, and the chosen one (C + A's inline simplification).
2. 02-high-level-design.md — end-to-end walkthrough, component interaction, key decisions.
3. 03-detailed-design.md — interfaces, new files, file tree, per-file contents, integration points, implementation notes.
4. 04-implementation-plan.md — CLAUDE.md-format plan + the appended plan-challenge results.
5. 05-pr-roadmap.md — the single-PR delivery plan.

One-line summary

Inline [N] markers become styled tappable links (open in the in-app browser) and a "Sources" button + bottom sheet lists cited/found documents — built on a small reusable packet-processing + source-UI foundation that PR 9b (agent timeline) extends. No backend/DB changes.