refactor(semantics): migrate TIER system to adaptive COMPLEXITY 1-5 scale

- Replaced rigid TIERs with continuous COMPLEXITY 1-5 scale in semantics.md
- Updated generate_semantic_map.py to parse and score based on Complexity
- Added backward compatibility mapping for legacy TIERs
- Migrated all .ai/shots examples to use @COMPLEXITY and updated relation syntax
- Added trivial_utility.py shot to demonstrate implicit Complexity 1 token savings

.ai/shots/frontend_component.svelte

@@ -1,18 +1,27 @@
 <!-- [DEF:FrontendComponentShot:Component] -->
 <!--
 /**
- * @TIER: CRITICAL
+ * @COMPLEXITY: 5
  * @SEMANTICS: Task, Button, Action, UX
  * @PURPOSE: Action button to spawn a new task with full UX feedback cycle.
  * @LAYER: UI (Presentation)
- * @RELATION: CALLS -> postApi
+ * @RELATION: [CALLS] ->[postApi]
  *
  * @INVARIANT: Must prevent double-submission while loading.
  * @INVARIANT: Loading state must always terminate (no infinite spinner).
  * @INVARIANT: User must receive feedback on both success and failure.
  *
+ * @SIDE_EFFECT: Sends network request and emits toast notifications.
+ * @DATA_CONTRACT: Input -> { plugin_id: string, params: object }, Output -> { task_id?: string }
+ *
  * @UX_REACTIVITY: Props -> $props(), LocalState -> $state(isLoading).
- * 
+ * @UX_STATE: Idle -> Button enabled, primary color, no spinner.
+ * @UX_STATE: Loading -> Button disabled, spinner visible, aria-busy=true.
+ * @UX_STATE: Success -> Toast success displayed.
+ * @UX_STATE: Error -> Toast error displayed.
+ * @UX_FEEDBACK: toast.success, toast.error
+ * @UX_RECOVERY: Error -> Keep form interactive and allow retry after failure.
+ *
  * @TEST_CONTRACT: ComponentState ->
  * {
  *   required_fields: { isLoading: bool },
@@ -21,26 +30,13 @@
  *     "isLoading=true implies aria-busy=true"
  *   ]
  * }
- *
  * @TEST_FIXTURE: idle_state -> { isLoading: false }
  * @TEST_FIXTURE: successful_response -> { task_id: "task_123" }
- * 
  * @TEST_EDGE: api_failure -> raises Error("Network")
  * @TEST_EDGE: empty_response -> {}
  * @TEST_EDGE: rapid_double_click -> special: concurrent_click
- * 
  * @TEST_INVARIANT: prevent_double_submission -> VERIFIED_BY:[rapid_double_click]
  * @TEST_INVARIANT: feedback_always_emitted -> VERIFIED_BY:[successful_response, api_failure]
- *
- * @UX_STATE: Idle -> Button enabled, primary color, no spinner.
- * @UX_STATE: Loading -> Button disabled, spinner visible, aria-busy=true.
- * @UX_STATE: Success -> Toast success displayed.
- * @UX_STATE: Error -> Toast error displayed.
- *
- * @UX_FEEDBACK: toast.success, toast.error
- *
- * @UX_TEST: Idle -> {click: spawnTask, expected: isLoading=true}
- * @UX_TEST: Loading -> {double_click: ignored, expected: single_api_call}
  */
 -->
 <script>