Grouped diagnostics and reusable value clustering

AGENTS.md

@@ -9,7 +9,9 @@ qrate publishes `agent-bridge.json` in the platform application-data directory.
 
 POST one JSON request to `url` with `Authorization: Bearer <token>`, `Content-Type: application/json`, and `X-Agent: codex`. The agent name is a visible label, not authority. Re-read the endpoint after `forbidden` because the token changes each launch.
 
-The bridge never changes a cell. `stage_findings` only replaces that agent's draft findings in the Problems panel and optionally offers whole-cell replacements in the Fixes menu.
+The bridge never changes a cell. `stage_findings` only replaces that agent's draft findings in the Problems panel and optionally offers whole-cell replacements under that finding in the cell's Problems menu.
+Bridge findings remain ungrouped atomic diagnostics. Built-in diagnostic groups do not change protocol 2 query or staging formats.
+Findings the archivist ignored are absent from `overview` counts and `diagnostics` queries, exactly as they are hidden in the Problems panel.
 
 qrate's bundled Pi runs as a contained child process. Stop, Restart, panel teardown, and app exit terminate its process tree; do not rely on an older Pi process surviving a restart.
 The bundled assistant loads its protocol 2 extension and `SYSTEM.md` with all skills disabled. The `skills/` folder in this repo packages the same instructions for an agent running outside qrate — `qrate-live-review` there is for an external Pi or any other runtime, not the built-in session.

CLAUDE.md

@@ -77,8 +77,9 @@ problem — read the `--check` diff and apply it by hand rather than fighting th
 | `project-wizard` | new/open project flow, recent projects, the launcher |
 | `data-exchange` | import/export — CSV/JSON-LD/CSL-JSON/ZIP, Google Sheets, preview |
 | `diagnostics` | the validator, spelling checks, fixes, and the problems panel |
-| `checks` | validation primitives (date parsing, authority files). Only `app` depends on it — it reaches `diagnostics` at runtime by registering into the validator registry, not through a `path` dependency |
+| `checks` | date and authority validators, registered by `app` through the `diagnostics` crate |
 | `spellcheck` | dictionary catalogue behind `diagnostics::spelling` |
+| `clustering` | pure value-pair matching, value-variant diagnostics, and cell fixes |
 | `plugin-host` | the Luau runtime that loads and runs plugins |
 | `plugin-api` | the types a plugin sees — see the three-repo rule below |
 | `preview` | turns a linked file into pixels — the format ladder and the thumbnail cache. Native decoders (PDF, video, RAW) belong here so they never reach `table` |

Cargo.toml

@@ -5,6 +5,7 @@ members = [
   "crates/app",
   "crates/ai",
   "crates/checks",
+  "crates/clustering",
   "crates/data-exchange",
   "crates/diagnostics",
   "crates/plugin-api",