feat(gui): implement Phases 2-5 of Comprehensive GUI UX track

- Add cost tracking with new cost_tracker.py module
- Enhance Track Proposal modal with editable titles and goals
- Add Conductor Setup summary and New Track creation form to MMA Dashboard
- Implement Task DAG editing (add/delete tickets) and track-scoped discussion
- Add visual polish: color-coded statuses, tinted progress bars, and node indicators
- Support live worker streaming from AI providers to GUI panels
- Fix numerous integration test regressions and stabilize headless service

config.toml

@@ -1,39 +1,42 @@
 [ai]
 provider = "gemini_cli"
-model = "gemini-3-flash-preview"
+model = "gemini-2.5-flash-lite"
 temperature = 0.0
 max_tokens = 8192
 history_trunc_limit = 8000
 system_prompt = ""
 
-[theme]
-palette = "ImGui Dark"
-font_size = 16.0
-scale = 1.0
-font_path = ""
-
 [projects]
 paths = [
-    "manual_slop.toml",
-    "C:/projects/forth/bootslop/bootslop.toml",
-    "C:\\projects\\manual_slop\\tests\\temp_project.toml",
-    "C:\\projects\\manual_slop\\tests\\temp_livecontextsim.toml",
-    "C:\\projects\\manual_slop\\tests\\temp_liveaisettingssim.toml",
-    "C:\\projects\\manual_slop\\tests\\temp_livetoolssim.toml",
-    "C:\\projects\\manual_slop\\tests\\temp_liveexecutionsim.toml",
+    "project.toml",
+    "C:\\projects\\manual_slop\\tests\\artifacts\\temp_project.toml",
+    "C:\\projects\\manual_slop\\tests\\artifacts\\temp_livecontextsim.toml",
+    "C:\\projects\\manual_slop\\tests\\artifacts\\temp_liveaisettingssim.toml",
+    "C:\\projects\\manual_slop\\tests\\artifacts\\temp_livetoolssim.toml",
+    "C:\\projects\\manual_slop\\tests\\artifacts\\temp_liveexecutionsim.toml",
 ]
-active = "C:\\projects\\manual_slop\\tests\\temp_project.toml"
+active = "C:\\projects\\manual_slop\\tests\\artifacts\\temp_liveexecutionsim.toml"
 
 [gui.show_windows]
 "Context Hub" = true
 "Files & Media" = true
 "AI Settings" = true
 "MMA Dashboard" = true
+"Tier 1: Strategy" = true
+"Tier 2: Tech Lead" = true
+"Tier 3: Workers" = true
+"Tier 4: QA" = true
 "Discussion Hub" = true
 "Operations Hub" = true
 Theme = true
-"Log Management" = true
-Diagnostics = true
+"Log Management" = false
+Diagnostics = false
+
+[theme]
+palette = "ImGui Dark"
+font_path = ""
+font_size = 16.0
+scale = 1.0
 
 [headless]
 api_key = "test-secret-key"