feat: externalize apps/analysis to Gitea repos, add analysis table

- Migration 007: repo_url on apps table + analysis table with FTS5
- Analysis struct, parser, CRUD, validation, hash computation
- Selective purge: remote-only apps/analysis preserved across fn index
- CLI: fn app list/clone/pull, fn analysis list/clone/pull
- search/show/list now include analysis results
- Apps removed from git tracking (content lives in Gitea repos)
- .gitkeep for apps/ and analysis/ dirs
- Bash functions: jupyter analysis pipeline, shell utilities
- Browser domain: CDP functions moved from infra to browser

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

functions/browser/cdp_click.md

@@ -0,0 +1,42 @@
+---
+name: cdp_click
+kind: function
+lang: go
+domain: browser
+version: "1.0.0"
+purity: impure
+signature: "func CdpClick(c *CDPConn, selector string) error"
+description: "Hace click en el primer elemento que coincide con el selector CSS. Obtiene coordenadas del centro via getBoundingClientRect, hace scroll al elemento y despacha eventos mousedown+mouseup via Input.dispatchMouseEvent."
+tags: [chrome, cdp, browser, automation, click, dom, devtools]
+uses_functions: [cdp_connect_go_browser, cdp_evaluate_go_browser]
+uses_types: []
+returns: []
+returns_optional: false
+error_type: "error_go_core"
+imports: [fmt, strconv, strings]
+tested: false
+tests: []
+test_file_path: ""
+file_path: "functions/infra/cdp_click.go"
+---
+
+## Ejemplo
+
+```go
+conn, _ := CdpConnect(9222)
+CdpNavigate(conn, "https://example.com")
+
+// Click en el primer enlace
+if err := CdpClick(conn, "a"); err != nil {
+    log.Fatal(err)
+}
+
+// Click en boton por ID
+if err := CdpClick(conn, "#submit-btn"); err != nil {
+    log.Fatal(err)
+}
+```
+
+## Notas
+
+El selector sigue la sintaxis CSS estandar (IDs, clases, atributos, pseudo-selectores). El elemento debe ser visible en el DOM en el momento del click. Si no se encuentra, retorna error inmediatamente sin esperar — combinar con `CdpWaitElement` para elementos dinamicos.