refactor: relocate agent-system/ to .agents/ with 7-role workflow restructure

Moves the agent workflow system from agent-system/ to .agents/ (dotfile convention).
Restructured from 5-role to 7-role pipeline: adds Analyst and splits Reviewer into
Code Reviewer + Security Reviewer. Removes all old workflow run artifacts.

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

.agents/skills/starterkit-grid-standards/references/list-checklist.md

@@ -0,0 +1,30 @@
+# List Checklist
+
+## Bootstrap
+
+1. `initStandardListPage({ grid, filters, hooks })` verwendet.
+2. `filterSchema` aus Server-Config uebergeben.
+3. `urlSync` bewusst gesetzt.
+
+## Interaction
+
+1. `rowDblClick.getUrl(...)` liefert stabile Ziel-URL oder leer.
+2. Keine Doppel-Action-Spalte (Factory auto-action vs explizite actions).
+3. Enter/Pointer/Focus fuer oeffnbare Rows funktionieren.
+
+## Pagination + URL
+
+1. Page-size Optionen nur `10/25/50/100`.
+2. URL Sync pruefen (`page`, `order`, `dir`, `limit`).
+3. Default-Werte erzeugen saubere URL.
+
+## Filter UX
+
+1. Search sichtbar.
+2. Drawer-Filter und Chips intakt.
+3. Reset/Apply Verhalten reproduzierbar.
+
+## Regression
+
+1. Sortierung, Selection/Bulk, Doppelklick unveraendert.
+2. Keine neuen Console Errors.