fix(agents): correct doc-updater description claiming command-invoking tools

The doc-updater description said it 'Runs /update-codemaps and /update-docs',
but its tools are Read, Write, Edit, Bash, Grep, Glob — no command-invoking
tool exists in this repo, and no agent is granted one. The agent body already
does the right thing (invokes generators directly); only the description was
wrong.

Agent descriptions drive selection, so a false capability claim can misroute
work to this agent on the assumption it can run slash commands.

docs/COMMAND-AGENT-MAP.md already records the true direction
(/update-codemaps -> doc-updater), so the description now matches: the agent
backs those commands rather than invoking them.

Applied to the canonical agent file and the two active .kiro mirrors that
carried the identical string.

.kiro/agents/doc-updater.json

@@ -1,6 +1,6 @@
 {
   "name": "doc-updater",
-  "description": "Documentation and codemap specialist. Use PROACTIVELY for updating codemaps and documentation. Runs /update-codemaps and /update-docs, generates docs/CODEMAPS/*, updates READMEs and guides.",
+  "description": "Documentation and codemap specialist. Use PROACTIVELY for updating codemaps and documentation. Generates docs/CODEMAPS/*, updates READMEs and guides. Backs the /update-codemaps and /update-docs commands.",
   "mcpServers": {},
   "tools": [
     "@builtin"

.kiro/agents/doc-updater.md

@@ -1,6 +1,6 @@
 ---
 name: doc-updater
-description: Documentation and codemap specialist. Use PROACTIVELY for updating codemaps and documentation. Runs /update-codemaps and /update-docs, generates docs/CODEMAPS/*, updates READMEs and guides.
+description: Documentation and codemap specialist. Use PROACTIVELY for updating codemaps and documentation. Generates docs/CODEMAPS/*, updates READMEs and guides. Backs the /update-codemaps and /update-docs commands.
 allowedTools:
   - read
   - write

agents/doc-updater.md

@@ -1,6 +1,6 @@
 ---
 name: doc-updater
-description: Documentation and codemap specialist. Use PROACTIVELY for updating codemaps and documentation. Runs /update-codemaps and /update-docs, generates docs/CODEMAPS/*, updates READMEs and guides.
+description: Documentation and codemap specialist. Use PROACTIVELY for updating codemaps and documentation. Generates docs/CODEMAPS/*, updates READMEs and guides. Backs the /update-codemaps and /update-docs commands.
 tools: Read, Write, Edit, Bash, Grep, Glob
 model: haiku
 ---