feat(omo-claude): port ultragoal to per-session file-based goals

Goal content under ./.omo/ultragoal/sessions/claude-<id>/ keyed by Claude Code
session_id (claude: prefix); UltragoalScope struct threaded; plan version 2 +
index.json registry with read-only v1 forward-migration (never deletes v1);
create_goal/get_goal/update_goal dependency dropped (file/steering-based); the
PreToolUse create_goal budget guard kept compiled+unit-tested but its hooks.json
registration removed (inert in CC). 26 tests pass. ultragoal removed from
sync-components HANDLED set — it is a hand-fork, not patch-synced.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

packages/omo-claude/plugin/components/ultragoal/hooks/hooks.json

@@ -0,0 +1,16 @@
+{
+	"hooks": {
+		"UserPromptSubmit": [
+			{
+				"hooks": [
+					{
+						"type": "command",
+						"command": "node \"${CLAUDE_PLUGIN_ROOT}/dist/cli.js\" hook user-prompt-submit",
+						"timeout": 10,
+						"statusMessage": "checking ultragoal steering"
+					}
+				]
+			}
+		]
+	}
+}