chore: migrate IDE environment from Kiro to Claude Code

- Add CLAUDE.md (root + ETL subdirectory + db subdirectory) consolidating all Kiro steering docs
- Add .mcp.json migrated from .kiro/settings/mcp.json (test DBs enabled, prod disabled)
- Add .claude/commands/ (audit, doc-sync, db-docs) replacing Kiro skills
- Add .claude/hooks/ (session_start, post_edit_audit, stop_audit_check) replacing Kiro hooks
- Add .claude/settings.json registering all hooks
- Add scripts/audit/prescan.py merging Kiro's audit_flagger + compliance_prescan
- Remove .kiro/agents, hooks, scripts, settings, skills, state (migrated or obsolete)
- Update .gitignore for Claude Code

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

.claude/settings.json

@@ -0,0 +1,45 @@
+{
+  "permissions": {
+    "additionalDirectories": [
+      "C:\\Users\\Administrator\\.claude",
+      "c:\\NeoZQYY\\.git"
+    ]
+  },
+  "hooks": {
+    "SessionStart": [
+      {
+        "hooks": [
+          {
+            "type": "command",
+            "command": "python \"$CLAUDE_PROJECT_DIR/.claude/hooks/session_start_context.py\"",
+            "timeout": 15,
+            "statusMessage": "加载项目状态..."
+          }
+        ]
+      }
+    ],
+    "PostToolUse": [
+      {
+        "matcher": "Edit|Write",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "python \"$CLAUDE_PROJECT_DIR/.claude/hooks/post_edit_audit_reminder.py\"",
+            "timeout": 5
+          }
+        ]
+      }
+    ],
+    "Stop": [
+      {
+        "hooks": [
+          {
+            "type": "command",
+            "command": "python \"$CLAUDE_PROJECT_DIR/.claude/hooks/stop_audit_check.py\"",
+            "timeout": 15
+          }
+        ]
+      }
+    ]
+  }
+}