docs(coding-agent): document glob pattern support in pi manifest

packages/coding-agent/CHANGELOG.md

@@ -16,7 +16,7 @@
 - `markdown.codeBlockIndent` setting to customize code block indentation in rendered output
 - Extension package management with `pi install`, `pi remove`, `pi update`, and `pi list` commands ([#645](https://github.com/badlogic/pi-mono/issues/645))
 - Package filtering: selectively load resources from packages using object form in `packages` array ([#645](https://github.com/badlogic/pi-mono/issues/645))
-- Glob pattern support with minimatch in package filters and top-level settings arrays (e.g., `"!funky.json"`, `"*.ts"`) ([#645](https://github.com/badlogic/pi-mono/issues/645))
+- Glob pattern support with minimatch in package filters, top-level settings arrays, and pi manifest (e.g., `"!funky.json"`, `"*.ts"`) ([#645](https://github.com/badlogic/pi-mono/issues/645))
 - `/reload` command to reload extensions, skills, prompts, and themes ([#645](https://github.com/badlogic/pi-mono/issues/645))
 - CLI flags for `--skill`, `--prompt-template`, `--theme`, `--no-prompt-templates`, and `--no-themes` ([#645](https://github.com/badlogic/pi-mono/issues/645))
 - Show provider alongside the model in the footer if multiple providers are available

packages/coding-agent/docs/extensions.md

@@ -196,6 +196,18 @@ pi update  # update all non-pinned packages
 }
 ```
 
+The pi manifest supports glob patterns and exclusions:
+
+```json
+{
+  "pi": {
+    "extensions": ["./extensions", "!**/deprecated/*"],
+    "skills": ["./skills", "./node_modules/other-pkg/skills", "!**/experimental/*"],
+    "themes": ["./themes/*.json"]
+  }
+}
+```
+
 The `package.json` approach enables:
 - Multiple extensions from one package
 - Skills, prompts, and themes declared alongside extensions