fix: add --legacy-peer-deps to deploy-docs workflow

The zod 3 vs 4 peer dependency conflict (claude-agent-sdk requires
zod@^4, gitmem uses zod@3) causes npm ci to fail without this flag.
CI workflow already had it; deploy-docs did not.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: 2 people

.github/workflows/deploy-docs.yml

@@ -24,7 +24,7 @@ jobs:
           cache: npm
 
       - name: Install root dependencies
-        run: npm ci
+        run: npm ci --legacy-peer-deps
 
       - name: Build MCP server (needed for tool doc generation)
         run: npm run build