docs: record the five Phase 8 prerequisites, and report contributions

Bring the living documentation in line with what the five passes actually
shipped, and correct the claims they superseded rather than leaving them to
mislead: the module UI context is six members, not five; module styling is
compiled CSS, not inline objects only; the strict manifest is version 7.

Also close a silent failure the new contribution mechanism introduces. A
contribution whose target capability nobody provides — or whose provider moved
outside its declared range — is not published, and the manifest is valid and
the artifact exists, so an operator sees a screen that renders nothing with no
error anywhere. `pnpm modules:validate` now lists each declared contribution
with its capability and range and says whether a compatible provider is
installed, and Doctor's discovery check reports the same per module. Both
derive from the publication registry the API serves from, so neither can
disagree with what a running platform would actually publish.

Co-Authored-By: Claude Opus 5 <[email protected]>

docs/development/repository-workflow.md

@@ -37,7 +37,10 @@ the root verification command discovers them automatically.
 
 `pnpm modules:validate` builds the workspace, then scans `modules/*` without a central registry. A
 missing or empty modules directory is valid and reports zero installed modules. Installed modules
-must produce the compiled JavaScript entrypoints declared by their static manifests. Optional
+must produce the compiled JavaScript entrypoints declared by their static manifests. Each module's
+declared browser contributions are listed with their target capability and range, and marked
+according to whether a compatible provider is installed — a contribution nobody provides is otherwise
+silent, since the manifest is valid and the artifact exists while nothing renders (ADR 0041). Optional
 schema entrypoints are loaded and validated for table ownership, namespacing, duplicates, and
 foreign-key isolation; this command does not connect to PostgreSQL or run migrations.
 
@@ -82,7 +85,8 @@ not a broken deployment).
 Doctor reports a fixed, deterministic set of checks:
 
 - The active Node.js version against the repository's declared engine range.
-- Static module discovery and dependency-first ordering.
+- Static module discovery and dependency-first ordering. A module that declares browser
+  contributions also reports how many of them have a compatible provider among the installed set.
 - Schema discovery, including validated module and table counts. This imports compiled schema
   definitions, which the module contract requires to perform no configuration reads, I/O, or
   database connection.