feat(gui): Replace single strategy box with 4-tier collapsible stream panels

scripts/tasks/gui_ux_1_1_tests.toml

@@ -0,0 +1,48 @@
+role = "tier3-worker"
+docs = ["conductor/workflow.md"]
+prompt = """
+Create tests/test_mma_dashboard_streams.py — failing tests for Task 1.1 of comprehensive_gui_ux track.
+
+CONTEXT: _render_mma_dashboard in @gui_2.py currently has a single input_text_multiline for "Strategy (Tier 1)" (around line 2729). Task 1.1 replaces it with four collapsible sections using imgui.collapsing_header(), one per tier.
+
+TESTS TO WRITE (all should FAIL against current code — they test the NEW behavior):
+
+1. test_all_four_tier_headers_rendered:
+   - Create a mock App with mma_streams = {"Tier 1": "strat", "Tier 2 (Tech Lead)": "lead", "Tier 3 (Worker): T-001": "work", "Tier 4 (QA)": "qa"}
+   - Patch imgui.collapsing_header to record calls, patch imgui.begin_child to return True, patch imgui.end_child, patch imgui.input_text_multiline
+   - Call app._render_mma_dashboard()
+   - Assert collapsing_header was called with a string containing "Tier 1" AND "Tier 2" AND "Tier 3" AND "Tier 4"
+
+2. test_tier3_aggregates_multiple_worker_streams:
+   - mma_streams = {"Tier 3 (Worker): T-001": "output1", "Tier 3 (Worker): T-002": "output2"}
+   - Patch imgui.collapsing_header to return True, patch begin_child/end_child/text
+   - Call _render_mma_dashboard()
+   - Assert imgui.text was called with content containing "T-001" and "T-002" (sub-headers shown)
+
+3. test_old_single_strategy_box_removed:
+   - With any mma_streams, call _render_mma_dashboard()
+   - Assert imgui.input_text_multiline was NOT called with "##mma_strategy" as first arg
+   - (The old box should be gone, replaced by collapsing_header sections)
+
+IMPLEMENTATION DETAILS:
+- Import: import pytest, unittest.mock (patch, MagicMock, call)
+- The App class needs minimal init to avoid full GUI startup. Use a MagicMock for the app instance and manually attach method:
+  app = MagicMock(spec=App)
+  app.mma_streams = {...}
+  app.mma_tier_usage = {}
+  app.tracks = []
+  app.active_track = None
+  app.active_tickets = []
+  app.mma_status = "idle"
+  app.active_tier = None
+  app.mma_step_mode = False
+  app._pending_mma_spawn = None
+  app._pending_mma_approval = None
+  app._pending_ask_dialog = False
+  # Then call the unbound method:
+  from gui_2 import App
+  App._render_mma_dashboard(app)
+- Patch target: 'gui_2.imgui' module-level
+- Use 1-space indentation throughout.
+- All 3 tests should FAIL against the current code (which still has the old single text box).
+"""