docs: add changelog and release notes for cached dependency graph

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: prosdev

.changeset/graph-cache.md

@@ -0,0 +1,10 @@
+---
+'@prosdevlab/dev-agent': patch
+---
+
+Cached dependency graph for scale
+
+- Dependency graph built at index time and saved as JSON — `dev_map` and `dev_refs` no longer fetch all docs via `getAll`
+- Incremental graph updates via file watcher (O(changed files), not O(all files))
+- Graceful fallback to current approach if cache is missing or corrupted
+- Raises effective doc limit from 10k to 50k for graph operations

website/content/latest-version.ts

@@ -4,10 +4,10 @@
  */
 
 export const latestVersion = {
-  version: '0.11.0',
-  title: 'Python Language Support',
-  date: 'March 31, 2026',
+  version: '0.11.1',
+  title: 'Cached Dependency Graph',
+  date: 'April 1, 2026',
   summary:
-    'Index Python codebases — functions, classes, methods, imports, decorators, type hints, docstrings. All MCP tools work with Python automatically.',
-  link: '/updates#v0110--python-language-support',
+    'dev_map and dev_refs load a pre-built graph instead of fetching all docs — removes the 10k doc ceiling for larger repos.',
+  link: '/updates#v0111--cached-dependency-graph',
 } as const;

website/content/updates/index.mdx

@@ -9,6 +9,20 @@ What's new in dev-agent. We ship improvements regularly to help AI assistants un
 
 ---
 
+## v0.11.1 — Cached Dependency Graph
+
+*April 1, 2026*
+
+**`dev_map` and `dev_refs` now load a pre-built dependency graph instead of fetching all docs on every call.** Removes the 10k doc ceiling for medium-to-large repos.
+
+- Dependency graph built at index time, saved as `dependency-graph.json` (~1-5MB)
+- `dev_map` PageRank and `dev_refs dependsOn` load from cache — no `getAll` needed
+- File watcher incrementally updates the graph on save (O(changed files))
+- Graceful fallback: missing or corrupted cache falls back to current behavior
+- Effective doc limit raised from 10k to 50k for graph operations
+
+---
+
 ## v0.11.0 — Python Language Support
 
 *March 31, 2026*