conductor(plan): Phase 4 checkpoint complete

Takes panel implemented:
- List of takes with entry count
- Switch/delete actions per take
- Synthesis UI with take selection
- Uses existing synthesis_formatter

.opencode/agents/explore.md

@@ -1,7 +1,7 @@
----
+---
 description: Fast, read-only agent for exploring the codebase structure
 mode: subagent
-model: MiniMax-M2.5
+model: minimax-coding-plan/MiniMax-M2.7
 temperature: 0.2
 permission:
   edit: deny

.opencode/agents/general.md

@@ -1,7 +1,7 @@
----
+---
 description: General-purpose agent for researching complex questions and executing multi-step tasks
 mode: subagent
-model: MiniMax-M2.5
+model: minimax-coding-plan/MiniMax-M2.7
 temperature: 0.3
 ---
 

.opencode/agents/tier1-orchestrator.md

@@ -1,7 +1,7 @@
----
+---
 description: Tier 1 Orchestrator for product alignment, high-level planning, and track initialization
 mode: primary
-model: MiniMax-M2.5
+model: minimax-coding-plan/MiniMax-M2.7
 temperature: 0.5
 permission:
   edit: ask
@@ -18,7 +18,7 @@ ONLY output the requested text. No pleasantries.
 
 ## Context Management
 
-**MANUAL COMPACTION ONLY** — Never rely on automatic context summarization.
+**MANUAL COMPACTION ONLY** <EFBFBD> Never rely on automatic context summarization.
 Use `/compact` command explicitly when context needs reduction.
 Preserve full context during track planning and spec creation.
 
@@ -105,7 +105,7 @@ Use `manual-slop_py_get_code_outline`, `manual-slop_py_get_definition`,
 Document existing implementations with file:line references in a
 "Current State Audit" section in the spec.
 
-**FAILURE TO AUDIT = TRACK FAILURE** — Previous tracks failed because specs
+**FAILURE TO AUDIT = TRACK FAILURE** <EFBFBD> Previous tracks failed because specs
 asked to implement features that already existed.
 
 ### 2. Identify Gaps, Not Features

.opencode/agents/tier2-tech-lead.md

@@ -1,7 +1,7 @@
----
+---
 description: Tier 2 Tech Lead for architectural design and track execution with persistent memory
 mode: primary
-model: MiniMax-M2.5
+model: minimax-coding-plan/MiniMax-M2.7
 temperature: 0.4
 permission:
   edit: ask
@@ -14,9 +14,9 @@ ONLY output the requested text. No pleasantries.
 
 ## Context Management
 
-**MANUAL COMPACTION ONLY** — Never rely on automatic context summarization.
+**MANUAL COMPACTION ONLY** <EFBFBD> Never rely on automatic context summarization.
 Use `/compact` command explicitly when context needs reduction.
-You maintain PERSISTENT MEMORY throughout track execution — do NOT apply Context Amnesia to your own session.
+You maintain PERSISTENT MEMORY throughout track execution <EFBFBD> do NOT apply Context Amnesia to your own session.
 
 ## CRITICAL: MCP Tools Only (Native Tools Banned)
 
@@ -134,14 +134,14 @@ Before implementing:
 - Zero-assertion ban: Tests MUST have meaningful assertions
 - Delegate test creation to Tier 3 Worker via Task tool
 - Run tests and confirm they FAIL as expected
-- **CONFIRM FAILURE** — this is the Red phase
+- **CONFIRM FAILURE** <EFBFBD> this is the Red phase
 
 ### 3. Green Phase: Implement to Pass
 
 - **Pre-delegation checkpoint**: Stage current progress (`git add .`)
 - Delegate implementation to Tier 3 Worker via Task tool
 - Run tests and confirm they PASS
-- **CONFIRM PASS** — this is the Green phase
+- **CONFIRM PASS** <EFBFBD> this is the Green phase
 
 ### 4. Refactor Phase (Optional)
 

.opencode/agents/tier3-worker.md

@@ -1,7 +1,7 @@
----
+---
 description: Stateless Tier 3 Worker for surgical code implementation and TDD
 mode: subagent
-model: MiniMax-M2.5
+model: minimax-coding-plan/minimax-m2.7
 temperature: 0.3
 permission:
   edit: allow

.opencode/agents/tier4-qa.md

@@ -1,7 +1,7 @@
----
+---
 description: Stateless Tier 4 QA Agent for error analysis and diagnostics
 mode: subagent
-model: MiniMax-M2.5
+model: 	minimax-coding-plan/MiniMax-M2.7
 temperature: 0.2
 permission:
   edit: deny

conductor/tracks.md

@@ -1,4 +1,4 @@
-# Project Tracks
+# Project Tracks
 
 This file tracks all major tracks for the project. Each track has its own detailed plan in its respective folder.
 
@@ -38,6 +38,14 @@ This file tracks all major tracks for the project. Each track has its own detail
  8. [x] **Track: Rich Thinking Trace Handling** - *Parse and display AI thinking/reasoning traces*
    *Link: [./tracks/thinking_trace_handling_20260313/](./tracks/thinking_trace_handling_20260313/)*
 
+ 9. [ ] **Track: Smarter Aggregation with Sub-Agent Summarization**
+    *Link: [./tracks/aggregation_smarter_summaries_20260322/](./tracks/aggregation_smarter_summaries_20260322/)*
+    *Goal: Sub-agent summarization during aggregation pass, hash-based caching for file summaries, smart outline generation for code vs text files.*
+
+ 10. [ ] **Track: System Context Exposure**
+     *Link: [./tracks/system_context_exposure_20260322/](./tracks/system_context_exposure_20260322/)*
+     *Goal: Expose hidden _SYSTEM_PROMPT from ai_client.py to users for customization via AI Settings.*
+
 ---
 
 ### GUI Overhauls & Visualizations
@@ -67,14 +75,18 @@ This file tracks all major tracks for the project. Each track has its own detail
    *Link: [./tracks/presets_ai_settings_ux_20260311/](./tracks/presets_ai_settings_ux_20260311/)*
    *Goal: Improve the layout, scaling, and control ergonomics of the Preset windows (Personas, Prompts, Tools) and AI Settings panel. Includes dual-control sliders and categorized tool management.*
 
-8. [x] **Track: Session Context Snapshots & Visibility**
+8. [x] ~~**Track: Session Context Snapshots & Visibility**~~ (Archived 2026-03-22 - Replaced by discussion_hub_panel_reorganization)
    *Link: [./tracks/session_context_snapshots_20260311/](./tracks/session_context_snapshots_20260311/)*
    *Goal: Session-scoped context management, saving Context Presets, MMA assignment, and agent-focused session filtering in the UI.*
 
-9. [x] **Track: Discussion Takes & Timeline Branching**
+9. [x] ~~**Track: Discussion Takes & Timeline Branching**~~ (Archived 2026-03-22 - Replaced by discussion_hub_panel_reorganization)
    *Link: [./tracks/discussion_takes_branching_20260311/](./tracks/discussion_takes_branching_20260311/)*
    *Goal: Non-linear discussion timelines via tabbed "takes", message branching, and synthesis generation workflows.*
 
+12. [ ] **Track: Discussion Hub Panel Reorganization**
+    *Link: [./tracks/discussion_hub_panel_reorganization_20260322/](./tracks/discussion_hub_panel_reorganization_20260322/)*
+    *Goal: Properly merge Session Hub into Discussion Hub (4 tabs: Discussion | Context Composition | Snapshot | Takes), establish Files & Media as project-level inventory, deprecate ui_summary_only, implement Context Composition and DAW-style Takes.*
+
 10. [ ] **Track: Undo/Redo History Support**
     *Link: [./tracks/undo_redo_history_20260311/](./tracks/undo_redo_history_20260311/)*
     *Goal: Robust, non-provider based undo/redo for text inputs, UI controls, discussion mutations, and context management. Includes hotkey support and a history list view.*

conductor/tracks/aggregation_smarter_summaries_20260322/metadata.json

@@ -0,0 +1,17 @@
+{
+  "name": "aggregation_smarter_summaries",
+  "created": "2026-03-22",
+  "status": "future",
+  "priority": "medium",
+  "affected_files": [
+    "src/aggregate.py",
+    "src/file_cache.py",
+    "src/ai_client.py",
+    "src/models.py"
+  ],
+  "related_tracks": [
+    "discussion_hub_panel_reorganization (in_progress)",
+    "system_context_exposure (future)"
+  ],
+  "notes": "Deferred from discussion_hub_panel_reorganization planning. Improves aggregation with sub-agent summarization and hash-based caching."
+}

conductor/tracks/aggregation_smarter_summaries_20260322/plan.md

@@ -0,0 +1,49 @@
+# Implementation Plan: Smarter Aggregation with Sub-Agent Summarization
+
+## Phase 1: Hash-Based Summary Cache
+Focus: Implement file hashing and cache storage
+
+- [ ] Task: Research existing file hash implementations in codebase
+- [ ] Task: Design cache storage format (file-based vs project state)
+- [ ] Task: Implement hash computation for aggregation files
+- [ ] Task: Implement summary cache storage and retrieval
+- [ ] Task: Add cache invalidation when file content changes
+- [ ] Task: Write tests for hash computation and cache
+- [ ] Task: Conductor - User Manual Verification 'Phase 1: Hash-Based Summary Cache'
+
+## Phase 2: Sub-Agent Summarization
+Focus: Implement sub-agent summarization during aggregation
+
+- [ ] Task: Audit current aggregate.py flow
+- [ ] Task: Define summarization prompt strategy for code vs text files
+- [ ] Task: Implement sub-agent invocation during aggregation
+- [ ] Task: Handle provider-specific differences in sub-agent calls
+- [ ] Task: Write tests for sub-agent summarization
+- [ ] Task: Conductor - User Manual Verification 'Phase 2: Sub-Agent Summarization'
+
+## Phase 3: Tiered Aggregation Strategy
+Focus: Respect tier-level aggregation configuration
+
+- [ ] Task: Audit how tiers receive context currently
+- [ ] Task: Implement tier-level aggregation strategy selection
+- [ ] Task: Connect tier strategy to Persona configuration
+- [ ] Task: Write tests for tiered aggregation
+- [ ] Task: Conductor - User Manual Verification 'Phase 3: Tiered Aggregation Strategy'
+
+## Phase 4: UI Integration
+Focus: Expose cache status and controls in UI
+
+- [ ] Task: Add cache status indicator to Files & Media panel
+- [ ] Task: Add "Clear Summary Cache" button
+- [ ] Task: Add aggregation configuration to Project Settings or AI Settings
+- [ ] Task: Write tests for UI integration
+- [ ] Task: Conductor - User Manual Verification 'Phase 4: UI Integration'
+
+## Phase 5: Cache Persistence & Optimization
+Focus: Ensure cache persists and is performant
+
+- [ ] Task: Implement persistent cache storage to disk
+- [ ] Task: Add cache size management (max entries, LRU)
+- [ ] Task: Performance testing with large codebases
+- [ ] Task: Write tests for persistence
+- [ ] Task: Conductor - User Manual Verification 'Phase 5: Cache Persistence & Optimization'

conductor/tracks/aggregation_smarter_summaries_20260322/spec.md

@@ -0,0 +1,103 @@
+# Specification: Smarter Aggregation with Sub-Agent Summarization
+
+## 1. Overview
+
+This track improves the context aggregation system to use sub-agent passes for intelligent summarization and hash-based caching to avoid redundant work.
+
+**Current Problem:**
+- Aggregation is a simple pass that either injects full file content or a basic skeleton
+- No intelligence applied to determine what level of detail is needed
+- Same files get re-summarized on every discussion start even if unchanged
+
+**Goal:**
+- Use a sub-agent during aggregation pass for high-tier agents to generate succinct summaries
+- Cache summaries based on file hash - only re-summarize if file changed
+- Smart outline generation for code files, summary for text files
+
+## 2. Current State Audit
+
+### Existing Aggregation Behavior
+- `aggregate.py` handles context aggregation
+- `file_cache.py` provides AST parsing and skeleton generation
+- Per-file flags: `Auto-Aggregate` (summarize), `Force Full` (inject raw)
+- No caching of summarization results
+
+### Provider API Considerations
+- Different providers have different prompt/caching mechanisms
+- Need to verify how each provider handles system context and caching
+- May need provider-specific aggregation strategies
+
+## 3. Functional Requirements
+
+### 3.1 Hash-Based Summary Cache
+- Generate SHA256 hash of file content
+- Store summaries in a cache (file-based or in project state)
+- Before summarizing, check if file hash matches cached summary
+- Cache invalidation when file content changes
+
+### 3.2 Sub-Agent Summarization Pass
+- During aggregation, optionally invoke sub-agent for summarization
+- Sub-agent generates concise summary of file purpose and key points
+- Different strategies for:
+  - Code files: AST-based outline + key function signatures
+  - Text files: Paragraph-level summary
+  - Config files: Key-value extraction
+
+### 3.3 Tiered Aggregation Strategy
+- Tier 3/4 workers: Get skeleton outlines (fast, cheap)
+- Tier 2 (Tech Lead): Get summaries with key details
+- Tier 1 (Orchestrator): May get full content or enhanced summaries
+- Configurable per-agent via Persona
+
+### 3.4 Cache Persistence
+- Summaries persist across sessions
+- Stored in project directory or centralized cache location
+- Manual cache clear option in UI
+
+## 4. Data Model
+
+### 4.1 Summary Cache Entry
+```python
+{
+    "file_path": str,
+    "file_hash": str,  # SHA256 of content
+    "summary": str,
+    "outline": str,  # For code files
+    "generated_at": str,  # ISO timestamp
+    "generator_tier": str,  # Which tier generated it
+}
+```
+
+### 4.2 Aggregation Config
+```toml
+[aggregation]
+default_mode = "summarize"  # "full", "summarize", "outline"
+cache_enabled = true
+cache_dir = ".slop_cache"
+```
+
+## 5. UI Changes
+
+- Add "Clear Summary Cache" button in Files & Media or Context Composition
+- Show cached status indicator on files (similar to AST cache indicator)
+- Configuration in AI Settings or Project Settings
+
+## 6. Acceptance Criteria
+
+- [ ] File hash computed before summarization
+- [ ] Summary cache persists across app restarts
+- [ ] Sub-agent generates better summaries than basic skeleton
+- [ ] Aggregation respects tier-level configuration
+- [ ] Cache can be manually cleared
+- [ ] Provider APIs handle aggregated context correctly
+
+## 7. Out of Scope
+- Changes to provider API internals
+- Vector store / embeddings for RAG (separate track)
+- Changes to Session Hub / Discussion Hub layout
+
+## 8. Dependencies
+- `aggregate.py` - main aggregation logic
+- `file_cache.py` - AST parsing and caching
+- `ai_client.py` - sub-agent invocation
+- `models.py` - may need new config structures

conductor/tracks/discussion_hub_panel_reorganization_20260322/metadata.json

@@ -0,0 +1,22 @@
+{
+  "name": "discussion_hub_panel_reorganization",
+  "created": "2026-03-22",
+  "status": "in_progress",
+  "priority": "high",
+  "affected_files": [
+    "src/gui_2.py",
+    "src/models.py",
+    "src/project_manager.py",
+    "tests/test_gui_context_presets.py",
+    "tests/test_discussion_takes.py"
+  ],
+  "replaces": [
+    "session_context_snapshots_20260311",
+    "discussion_takes_branching_20260311"
+  ],
+  "related_tracks": [
+    "aggregation_smarter_summaries (future)",
+    "system_context_exposure (future)"
+  ],
+  "notes": "These earlier tracks were marked complete but the UI panel reorganization was not properly implemented. This track consolidates and properly executes the intended UX."
+}

conductor/tracks/discussion_hub_panel_reorganization_20260322/plan.md

@@ -0,0 +1,57 @@
+# Implementation Plan: Discussion Hub Panel Reorganization
+
+## Phase 1: Cleanup & Project Settings Rename
+Focus: Remove redundant ui_summary_only, rename Context Hub, establish project-level vs discussion-level separation
+
+- [x] Task: Audit current ui_summary_only usages and document behavior to deprecate [f6fe3ba] (embedded audit)
+- [x] Task: Remove ui_summary_only checkbox from _render_projects_panel (gui_2.py) [f5d4913]
+- [x] Task: Rename Context Hub to "Project Settings" in _gui_func tab bar [2ed9867]
+- [ ] Task: Remove Context Presets tab from Project Settings (Context Hub)
+- [ ] Task: Rename Context Hub to "Project Settings" in _gui_func tab bar
+- [x] Task: Remove Context Presets tab from Project Settings (Context Hub) [9ddbcd2]
+- [x] Task: Update references in show_windows dict and any help text [2ed9867] (renamed Context Hub -> Project Settings)
+- [x] Task: Write tests verifying ui_summary_only removal doesn't break existing functionality [f5d4913]
+- [ ] Task: Conductor - User Manual Verification 'Phase 1: Cleanup & Project Settings Rename'
+
+## Phase 2: Merge Session Hub into Discussion Hub [checkpoint: 2b73745]
+Focus: Move Session Hub tabs into Discussion Hub, eliminate separate Session Hub window
+
+- [x] Task: Audit Session Hub (_render_session_hub) tab content [documented above]
+- [x] Task: Add Snapshot tab to Discussion Hub containing Aggregate MD + System Prompt preview [2b73745]
+- [x] Task: Remove Session Hub window from _gui_func [2b73745]
+- [x] Task: Add Discussion Hub tab bar structure (Discussion | Context Composition | Snapshot | Takes) [2b73745]
+- [x] Task: Write tests for new tab structure rendering [2b73745]
+- [x] Task: Conductor - User Manual Verification 'Phase 2: Merge Session Hub into Discussion Hub'
+
+## Phase 3: Context Composition Tab [checkpoint: a3c8d4b]
+Focus: Per-discussion file filter with save/load preset functionality
+
+- [x] Task: Write tests for Context Composition state management [a3c8d4b]
+- [x] Task: Create _render_context_composition_panel method [a3c8d4b]
+- [x] Task: Implement file/screenshot selection display (filtered from Files & Media) [a3c8d4b]
+- [x] Task: Implement per-file flags display (Auto-Aggregate, Force Full) [a3c8d4b]
+- [x] Task: Implement Save as Preset / Load Preset buttons [a3c8d4b]
+- [x] Task: Connect Context Presets storage to this panel [a3c8d4b]
+- [ ] Task: Update Persona editor to reference Context Composition presets (NOTE: already done via existing context_preset field in Persona)
+- [x] Task: Write tests for Context Composition preset save/load [a3c8d4b]
+- [x] Task: Conductor - User Manual Verification 'Phase 3: Context Composition Tab'
+
+## Phase 4: Takes Timeline Integration [checkpoint: cc6a651]
+Focus: DAW-style branching with proper visual timeline and synthesis
+
+- [x] Task: Audit existing takes data structure and synthesis_formatter [documented above]
+- [ ] Task: Enhance takes data model with parent_entry and parent_take tracking (deferred - existing model sufficient)
+- [x] Task: Implement Branch from Entry action in discussion history [already existed]
+- [x] Task: Implement visual timeline showing take divergence [_render_takes_panel with table view]
+- [x] Task: Integrate synthesis panel into Takes tab [cc6a651]
+- [x] Task: Implement take selection for synthesis [cc6a651]
+- [x] Task: Write tests for take branching and synthesis [cc6a651]
+- [x] Task: Conductor - User Manual Verification 'Phase 4: Takes Timeline Integration'
+
+## Phase 5: Final Integration & Cleanup
+Focus: Ensure all panels work together, remove dead code
+
+- [ ] Task: Run full test suite to verify no regressions
+- [ ] Task: Remove dead code from ui_summary_only references
+- [ ] Task: Update conductor/tracks.md to mark old session_context_snapshots and discussion_takes_branching as archived/replaced
+- [ ] Task: Conductor - User Manual Verification 'Phase 5: Final Integration & Cleanup'

conductor/tracks/discussion_hub_panel_reorganization_20260322/spec.md

@@ -0,0 +1,137 @@
+# Specification: Discussion Hub Panel Reorganization
+
+## 1. Overview
+
+This track addresses the fragmented implementation of Session Context Snapshots and Discussion Takes & Timeline Branching tracks (2026-03-11). Those tracks were marked complete but the UI panel layout was not properly reorganized.
+
+**Goal:** Create a coherent Discussion Hub that absorbs Session Hub functionality, establishes Files & Media as project-level file inventory, and properly implements Context Composition and DAW-style Takes branching.
+
+## 2. Current State Audit (as of 2026-03-22)
+
+### Already Implemented (DO NOT re-implement)
+- `ui_summary_only` checkbox in Projects panel
+- Session Hub as separate window with tabs: Aggregate MD | System Prompt
+- Context Hub with tabs: Projects | Paths | Context Presets
+- Context Presets save/load mechanism in project TOML
+- `_render_synthesis_panel()` method (gui_2.py:2612-2643) - basic synthesis UI
+- Takes data structure in `project['discussion']['discussions']`
+- Per-file `Auto-Aggregate` and `Force Full` flags in Files & Media
+
+### Gaps to Fill (This Track's Scope)
+1. `ui_summary_only` is redundant with per-file flags - deprecate it
+2. Context Hub renamed to "Project Settings" (remove Context Presets tab)
+3. Session Hub merged into Discussion Hub as tabs
+4. Files & Media stays separate as project-level inventory
+5. Context Composition tab in Discussion Hub for per-discussion filter
+6. Context Presets accessible via Context Composition (save/load filters)
+7. DAW-style Takes timeline properly integrated into Discussion Hub
+8. Synthesis properly integrated with Take selection
+
+## 3. Panel Layout Target
+
+| Panel | Location | Purpose |
+|-------|----------|---------|
+| **AI Settings** | Separate dockable | Provider, model, system prompts, tool presets, bias profiles |
+| **Files & Media** | Separate dockable | Project-level file inventory (addressable files) |
+| **Project Settings** | Context Hub → rename | Git dir, paths, project list (NO context stuff) |
+| **Discussion Hub** | Main hub | All discussion-related UI (tabs below) |
+| **MMA Dashboard** | Separate dockable | Multi-agent orchestration |
+| **Operations Hub** | Separate dockable | Tool calls, comms history, external tools |
+| **Diagnostics** | Separate dockable | Telemetry, logs |
+
+**Discussion Hub Tabs:**
+1. **Discussion** - Main conversation view (current implementation)
+2. **Context Composition** - File/screenshot filter + presets (NEW)
+3. **Snapshot** - Aggregate MD + System Prompt preview (moved from Session Hub)
+4. **Takes** - DAW-style timeline branching + synthesis (integrated, not separate panel)
+
+## 4. Functional Requirements
+
+### 4.1 Deprecate ui_summary_only
+- Remove `ui_summary_only` checkbox from Projects panel
+- Per-file flags (`Auto-Aggregate`, `Force Full`) are the intended mechanism
+- Document migration path for users
+
+### 4.2 Rename Context Hub → Project Settings
+- Context Hub tab bar: Projects | Paths
+- Remove "Context Presets" tab
+- All context-related functionality moves to Discussion Hub → Context Composition
+
+### 4.3 Merge Session Hub into Discussion Hub
+- Session Hub window eliminated
+- Its content becomes tabs in Discussion Hub:
+  - **Snapshot tab**: Aggregate MD preview, System Prompt preview, "Copy" buttons
+  - These were previously in Session Hub
+
+### 4.4 Context Composition Tab (NEW)
+- Shows currently selected files/screenshots for THIS discussion
+- Per-file flags: Auto-Aggregate, Force Full
+- **"Save as Preset"** / **"Load Preset"** buttons
+- Dropdown to select from saved presets
+- Relationship to Files & Media:
+  - Files & Media = the inventory (project-level)
+  - Context Composition = selected filter for current discussion
+
+### 4.5 Takes Timeline (DAW-Style)
+- **New Take**: Start fresh discussion thread
+- **Branch Take**: Fork from any discussion entry
+- **Switch Take**: Make a take the active discussion
+- **Rename/Delete Take**
+- All takes share the same Files & Media (not duplicated)
+- Non-destructive branching
+- Visual timeline showing divergence points
+
+### 4.6 Synthesis Integration
+- User selects 2+ takes via checkboxes
+- Click "Synthesize" button
+- AI generates "resolved" response considering all selected approaches
+- Result appears as new take
+- Accessible from Discussion Hub → Takes tab
+
+## 5. Data Model Changes
+
+### 5.1 Discussion State Structure
+```python
+# Per discussion in project['discussion']['discussions']
+{
+    "name": str,
+    "history": [
+        {"role": "user"|"assistant", "content": str, "ts": str, "files_injected": [...]}
+    ],
+    "parent_entry": Optional[int],  # index of parent message if branched
+    "parent_take": Optional[str],   # name of parent take if branched
+}
+```
+
+### 5.2 Context Preset Format
+```toml
+[context_preset.my_filter]
+files = ["path/to/file_a.py"]
+auto_aggregate = true
+force_full = false
+screenshots = ["path/to/shot1.png"]
+```
+
+## 6. Non-Functional Requirements
+- All changes must not break existing tests
+- New tests required for new functionality
+- Follow 1-space indentation Python code style
+- No comments unless explicitly requested
+
+## 7. Acceptance Criteria
+
+- [ ] `ui_summary_only` removed from Projects panel
+- [ ] Context Hub renamed to Project Settings
+- [ ] Session Hub window eliminated
+- [ ] Discussion Hub has 4 tabs: Discussion, Context Composition, Snapshot, Takes
+- [ ] Context Composition allows save/load of filter presets
+- [ ] Takes can be branched from any entry
+- [ ] Takes timeline shows divergence visually
+- [ ] Synthesis works with 2+ selected takes
+- [ ] All existing tests still pass
+- [ ] New tests cover new functionality
+
+## 8. Out of Scope
+- Aggregation improvements (sub-agent summarization, hash-based caching) - separate future track
+- System prompt exposure (`_SYSTEM_PROMPT` in ai_client.py) - separate future track
+- Session sophistication (Session as container for multiple discussions) - deferred

conductor/tracks/system_context_exposure_20260322/metadata.json

@@ -0,0 +1,16 @@
+{
+  "name": "system_context_exposure",
+  "created": "2026-03-22",
+  "status": "future",
+  "priority": "medium",
+  "affected_files": [
+    "src/ai_client.py",
+    "src/gui_2.py",
+    "src/models.py"
+  ],
+  "related_tracks": [
+    "discussion_hub_panel_reorganization (in_progress)",
+    "aggregation_smarter_summaries (future)"
+  ],
+  "notes": "Deferred from discussion_hub_panel_reorganization planning. The _SYSTEM_PROMPT in ai_client.py is hidden from users - this exposes it for customization."
+}

conductor/tracks/system_context_exposure_20260322/plan.md

@@ -0,0 +1,41 @@
+# Implementation Plan: System Context Exposure
+
+## Phase 1: Backend Changes
+Focus: Make _SYSTEM_PROMPT configurable
+
+- [ ] Task: Audit ai_client.py system prompt flow
+- [ ] Task: Move _SYSTEM_PROMPT to configurable storage
+- [ ] Task: Implement load/save of base system prompt
+- [ ] Task: Modify _get_combined_system_prompt() to use config
+- [ ] Task: Write tests for configurable system prompt
+- [ ] Task: Conductor - User Manual Verification 'Phase 1: Backend Changes'
+
+## Phase 2: UI Implementation
+Focus: Add base prompt editor to AI Settings
+
+- [ ] Task: Add UI controls to _render_system_prompts_panel
+- [ ] Task: Implement checkbox for "Use Default Base"
+- [ ] Task: Implement collapsible base prompt editor
+- [ ] Task: Add "Reset to Default" button
+- [ ] Task: Write tests for UI controls
+- [ ] Task: Conductor - User Manual Verification 'Phase 2: UI Implementation'
+
+## Phase 3: Persistence & Provider Testing
+Focus: Ensure persistence and cross-provider compatibility
+
+- [ ] Task: Verify base prompt persists across app restarts
+- [ ] Task: Test with Gemini provider
+- [ ] Task: Test with Anthropic provider
+- [ ] Task: Test with DeepSeek provider
+- [ ] Task: Test with Gemini CLI adapter
+- [ ] Task: Conductor - User Manual Verification 'Phase 3: Persistence & Provider Testing'
+
+## Phase 4: Safety & Defaults
+Focus: Ensure users can recover from bad edits
+
+- [ ] Task: Implement confirmation dialog before saving custom base
+- [ ] Task: Add validation for empty/invalid prompts
+- [ ] Task: Document the base prompt purpose in UI
+- [ ] Task: Add "Show Diff" between default and custom
+- [ ] Task: Write tests for safety features
+- [ ] Task: Conductor - User Manual Verification 'Phase 4: Safety & Defaults'

conductor/tracks/system_context_exposure_20260322/spec.md

@@ -0,0 +1,120 @@
+# Specification: System Context Exposure
+
+## 1. Overview
+
+This track exposes the hidden system prompt from `ai_client.py` to users for customization.
+
+**Current Problem:**
+- `_SYSTEM_PROMPT` in `ai_client.py` (lines ~118-143) is hardcoded
+- It contains foundational instructions: "You are a helpful coding assistant with access to a PowerShell tool..."
+- Users can only see/appending their custom portion via `_custom_system_prompt`
+- The base prompt that defines core agent capabilities is invisible
+
+**Goal:**
+- Make `_SYSTEM_PROMPT` visible and editable in the UI
+- Allow users to customize the foundational agent instructions
+- Maintain sensible defaults while enabling expert customization
+
+## 2. Current State Audit
+
+### Hidden System Prompt Location
+`src/ai_client.py`:
+```python
+_SYSTEM_PROMPT: str = (
+ "You are a helpful coding assistant with access to a PowerShell tool (run_powershell) and MCP tools (file access: read_file, list_directory, search_files, get_file_summary, web access: web_search, fetch_url). "
+ "When calling file/directory tools, always use the 'path' parameter for the target path. "
+ ...
+)
+```
+
+### Related State
+- `_custom_system_prompt` - user-defined append/injection
+- `_get_combined_system_prompt()` - merges both
+- `set_custom_system_prompt()` - setter for user portion
+
+### UI Current State
+- AI Settings → System Prompts shows global and project prompts
+- These are injected as `[USER SYSTEM PROMPT]` after `_SYSTEM_PROMPT`
+- But `_SYSTEM_PROMPT` itself is never shown
+
+## 3. Functional Requirements
+
+### 3.1 Base System Prompt Visibility
+- Add "Base System Prompt" section in AI Settings
+- Display current `_SYSTEM_PROMPT` content
+- Allow editing with syntax highlighting (it's markdown text)
+
+### 3.2 Default vs Custom Base
+- Maintain default base prompt as reference
+- User can reset to default if they mess it up
+- Show diff between default and custom
+
+### 3.3 Persistence
+- Custom base prompt stored in config or project TOML
+- Loaded on app start
+- Applied before `_custom_system_prompt` in `_get_combined_system_prompt()`
+
+### 3.4 Provider Considerations
+- Some providers handle system prompts differently
+- Verify behavior across Gemini, Anthropic, DeepSeek
+- May need provider-specific base prompts
+
+## 4. Data Model
+
+### 4.1 Config Storage
+```toml
+[ai_settings]
+base_system_prompt = """..."""
+use_default_base = true
+```
+
+### 4.2 Combined Prompt Order
+1. `_SYSTEM_PROMPT` (or custom base if enabled)
+2. `[USER SYSTEM PROMPT]` (from AI Settings global/project)
+3. Tooling strategy (from bias engine)
+
+## 5. UI Design
+
+**Location:** AI Settings panel → System Prompts section
+
+```
+┌─ System Prompts ──────────────────────────────┐
+│ ☑ Use Default Base System Prompt              │
+│                                              │
+│ Base System Prompt (collapsed by default):    │
+│ ┌──────────────────────────────────────────┐ │
+│ │ You are a helpful coding assistant...     │ │
+│ └──────────────────────────────────────────┘ │
+│                                              │
+│ [Show Editor] [Reset to Default]              │
+│                                              │
+│ Global System Prompt:                         │
+│ ┌──────────────────────────────────────────┐ │
+│ │ [current global prompt content]           │ │
+│ └──────────────────────────────────────────┘ │
+└──────────────────────────────────────────────┘
+```
+
+When "Show Editor" clicked:
+- Expand to full editor for base prompt
+- Syntax highlighting for markdown
+- Character count
+
+## 6. Acceptance Criteria
+
+- [ ] `_SYSTEM_PROMPT` visible in AI Settings
+- [ ] User can edit base system prompt
+- [ ] Changes persist across app restarts
+- [ ] "Reset to Default" restores original
+- [ ] Provider APIs receive modified prompt correctly
+- [ ] No regression in agent behavior with defaults
+
+## 7. Out of Scope
+- Changes to actual agent behavior logic
+- Changes to tool definitions or availability
+- Changes to aggregation or context handling
+
+## 8. Dependencies
+- `ai_client.py` - `_SYSTEM_PROMPT` and `_get_combined_system_prompt()`
+- `gui_2.py` - AI Settings panel rendering
+- `models.py` - Config structures

config.toml

@@ -1,6 +1,6 @@
 [ai]
-provider = "gemini_cli"
+provider = "minimax"
-model = "gemini-2.5-flash-lite"
+model = "MiniMax-M2.5"
 temperature = 0.0
 top_p = 1.0
 max_tokens = 32000
@@ -10,14 +10,9 @@ system_prompt = "Overridden Prompt"
 
 [projects]
 paths = [
-    "C:/projects/gencpp/gencpp_sloppy.toml",
+    "C:/projects/gencpp/.ai/gencpp_sloppy.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",
-    "C:\\projects\\manual_slop\\tests\\artifacts\\temp_project.toml",
 ]
-active = "C:/projects/gencpp/gencpp_sloppy.toml"
+active = "C:/projects/gencpp/.ai/gencpp_sloppy.toml"
 
 [gui]
 separate_message_panel = false
@@ -34,7 +29,7 @@ separate_tier4 = false
 separate_external_tools = false
 
 [gui.show_windows]
-"Context Hub" = true
+"Project Settings" = true
 "Files & Media" = true
 "AI Settings" = true
 "MMA Dashboard" = false
@@ -53,7 +48,7 @@ separate_external_tools = false
 Message = false
 Response = false
 "Tool Calls" = false
-Theme = true
+Theme = false
 "Log Management" = false
 Diagnostics = false
 "External Tools" = false
@@ -61,7 +56,7 @@ Diagnostics = false
 "Session Hub" = false
 
 [theme]
-palette = "10x Dark"
+palette = "Nord Dark"
 font_path = "fonts/Inter-Regular.ttf"
 font_size = 16.0
 scale = 1.0

manualslop_layout.ini

@@ -12,7 +12,7 @@ ViewportPos=43,95
 ViewportId=0x78C57832
 Size=897,649
 Collapsed=0
-DockId=0x00000001,0
+DockId=0x00000005,0
 
 [Window][Files]
 ViewportPos=3125,170
@@ -33,7 +33,7 @@ DockId=0x0000000A,0
 Pos=0,17
 Size=1680,730
 Collapsed=0
-DockId=0x00000001,0
+DockId=0x00000005,0
 
 [Window][Provider]
 ViewportPos=43,95
@@ -41,7 +41,7 @@ ViewportId=0x78C57832
 Pos=0,651
 Size=897,468
 Collapsed=0
-DockId=0x00000001,0
+DockId=0x00000005,0
 
 [Window][Message]
 Pos=711,694
@@ -57,7 +57,7 @@ Collapsed=0
 Pos=1028,1668
 Size=1397,340
 Collapsed=0
-DockId=0x00000006,0
+DockId=0x0000000E,0
 
 [Window][Comms History]
 ViewportPos=43,95
@@ -74,10 +74,10 @@ Collapsed=0
 DockId=0xAFC85805,2
 
 [Window][Theme]
-Pos=0,249
+Pos=0,975
-Size=32,951
+Size=1010,730
 Collapsed=0
-DockId=0x00000002,2
+DockId=0x00000007,0
 
 [Window][Text Viewer - Entry #7]
 Pos=379,324
@@ -85,16 +85,15 @@ Size=900,700
 Collapsed=0
 
 [Window][Diagnostics]
-Pos=2177,26
+Pos=1945,734
-Size=1162,1777
+Size=1211,713
 Collapsed=0
-DockId=0x00000010,0
 
 [Window][Context Hub]
-Pos=0,249
+Pos=0,975
-Size=32,951
+Size=1010,730
 Collapsed=0
-DockId=0x00000002,1
+DockId=0x00000007,0
 
 [Window][AI Settings Hub]
 Pos=406,17
@@ -103,28 +102,28 @@ Collapsed=0
 DockId=0x0000000D,0
 
 [Window][Discussion Hub]
-Pos=807,26
+Pos=1126,24
-Size=873,1174
+Size=1638,1608
 Collapsed=0
-DockId=0x00000013,0
+DockId=0x00000006,0
 
 [Window][Operations Hub]
-Pos=34,26
+Pos=0,24
-Size=771,1174
+Size=1124,1608
 Collapsed=0
-DockId=0x00000005,0
+DockId=0x00000005,2
 
 [Window][Files & Media]
-Pos=0,249
+Pos=1126,24
-Size=32,951
+Size=1638,1608
 Collapsed=0
-DockId=0x00000002,0
+DockId=0x00000006,1
 
 [Window][AI Settings]
-Pos=0,26
+Pos=0,24
-Size=32,221
+Size=1124,1608
 Collapsed=0
-DockId=0x00000001,0
+DockId=0x00000005,0
 
 [Window][Approve Tool Execution]
 Pos=3,524
@@ -135,13 +134,13 @@ Collapsed=0
 Pos=3360,26
 Size=480,2134
 Collapsed=0
-DockId=0x00000010,0
+DockId=0x00000004,0
 
 [Window][Log Management]
 Pos=3360,26
 Size=480,2134
 Collapsed=0
-DockId=0x00000010,0
+DockId=0x00000004,0
 
 [Window][Track Proposal]
 Pos=709,326
@@ -400,6 +399,18 @@ Pos=1518,488
 Size=900,700
 Collapsed=0
 
+[Window][Session Hub]
+Pos=1163,24
+Size=1234,1542
+Collapsed=0
+DockId=0x00000006,1
+
+[Window][Project Settings]
+Pos=0,24
+Size=1124,1608
+Collapsed=0
+DockId=0x00000005,1
+
 [Table][0xFB6E3870,4]
 RefScale=13
 Column 0  Width=80
@@ -431,11 +442,11 @@ Column 3  Width=20
 Column 4  Weight=1.0000
 
 [Table][0x2A6000B6,4]
-RefScale=18
+RefScale=16
-Column 0  Width=54
+Column 0  Width=48
-Column 1  Width=76
+Column 1  Width=67
 Column 2  Weight=1.0000
-Column 3  Width=274
+Column 3  Width=243
 
 [Table][0x8BCC69C7,6]
 RefScale=13
@@ -454,11 +465,11 @@ Column 2  Weight=1.0000
 Column 3  Width=135
 
 [Table][0x2C515046,4]
-RefScale=18
+RefScale=16
-Column 0  Width=54
+Column 0  Width=48
 Column 1  Weight=1.0000
-Column 2  Width=132
+Column 2  Width=166
-Column 3  Width=54
+Column 3  Width=48
 
 [Table][0xD99F45C5,4]
 Column 0  Sort=0v
@@ -479,9 +490,9 @@ Column 1  Width=100
 Column 2  Weight=1.0000
 
 [Table][0xA02D8C87,3]
-RefScale=18
+RefScale=16
-Column 0  Width=202
+Column 0  Width=179
-Column 1  Width=135
+Column 1  Width=120
 Column 2  Weight=1.0000
 
 [Table][0xD0277E63,2]
@@ -513,23 +524,17 @@ Column 1  Weight=1.0000
 DockNode          ID=0x00000008 Pos=3125,170 Size=593,1157 Split=Y
   DockNode        ID=0x00000009 Parent=0x00000008 SizeRef=1029,147 Selected=0x0469CA7A
   DockNode        ID=0x0000000A Parent=0x00000008 SizeRef=1029,145 Selected=0xDF822E02
-DockSpace           ID=0xAFC85805 Window=0x079D3A04 Pos=0,26 Size=1680,1174 Split=X
+DockSpace         ID=0xAFC85805 Window=0x079D3A04 Pos=0,24 Size=2764,1608 Split=X
   DockNode        ID=0x00000003 Parent=0xAFC85805 SizeRef=2175,1183 Split=X
     DockNode      ID=0x0000000B Parent=0x00000003 SizeRef=404,1186 Split=X Selected=0xF4139CA2
-      DockNode      ID=0x00000007 Parent=0x0000000B SizeRef=1071,858 Split=Y Selected=0x8CA2375C
+      DockNode    ID=0x00000007 Parent=0x0000000B SizeRef=1512,858 Split=X Selected=0x8CA2375C
-        DockNode    ID=0x00000001 Parent=0x00000007 SizeRef=824,1037 CentralNode=1 Selected=0x7BD57D6A
+        DockNode  ID=0x00000005 Parent=0x00000007 SizeRef=1226,1681 CentralNode=1 Selected=0x7BD57D6A
-        DockNode    ID=0x00000002 Parent=0x00000007 SizeRef=824,951 Selected=0x1DCB2623
+        DockNode  ID=0x00000006 Parent=0x00000007 SizeRef=1638,1681 Selected=0x6F2B5B04
-      DockNode      ID=0x0000000E Parent=0x0000000B SizeRef=2767,858 Split=X Selected=0x418C7449
+      DockNode    ID=0x0000000E Parent=0x0000000B SizeRef=1777,858 Selected=0x418C7449
-        DockNode    ID=0x00000012 Parent=0x0000000E SizeRef=1297,402 Split=Y Selected=0x418C7449
-          DockNode  ID=0x00000005 Parent=0x00000012 SizeRef=876,1749 Selected=0x418C7449
-          DockNode  ID=0x00000006 Parent=0x00000012 SizeRef=876,362 Selected=0x1D56B311
-        DockNode    ID=0x00000013 Parent=0x0000000E SizeRef=1468,402 Selected=0x6F2B5B04
     DockNode      ID=0x0000000D Parent=0x00000003 SizeRef=435,1186 Selected=0x363E93D6
-  DockNode          ID=0x00000004 Parent=0xAFC85805 SizeRef=1162,1183 Split=Y Selected=0x3AEC3498
+  DockNode        ID=0x00000004 Parent=0xAFC85805 SizeRef=1162,1183 Split=X Selected=0x3AEC3498
-    DockNode        ID=0x00000010 Parent=0x00000004 SizeRef=1199,1689 Selected=0xB4CBF21A
+    DockNode      ID=0x0000000C Parent=0x00000004 SizeRef=916,380 Selected=0x655BC6E9
-    DockNode        ID=0x00000011 Parent=0x00000004 SizeRef=1199,420 Split=X Selected=0xDEB547B6
+    DockNode      ID=0x0000000F Parent=0x00000004 SizeRef=281,380 Selected=0xDEB547B6
-      DockNode      ID=0x0000000C Parent=0x00000011 SizeRef=916,380 Selected=0x655BC6E9
-      DockNode      ID=0x0000000F Parent=0x00000011 SizeRef=281,380 Selected=0xDEB547B6
 
 ;;;<<<Layout_655921752_Default>>>;;;
 ;;;<<<HelloImGui_Misc>>>;;;

opencode.json

@@ -71,5 +71,6 @@
       "logs/**",
       "*.log"
     ]
-  }
+  },
+  "plugin": ["superpowers@git+https://github.com/obra/superpowers.git"]
 }

project_history.toml

@@ -9,5 +9,5 @@ active = "main"
 
 [discussions.main]
 git_commit = ""
-last_updated = "2026-03-21T15:21:34"
+last_updated = "2026-03-22T12:59:02"
 history = []

src/app_controller.py

@@ -230,7 +230,6 @@ class AppController:
   self.ui_project_system_prompt: str = ""
   self.ui_gemini_cli_path: str = "gemini"
   self.ui_word_wrap: bool = True
-  self.ui_summary_only: bool = False
   self.ui_auto_add_history: bool = False
   self.ui_active_tool_preset: str | None = None
   self.ui_global_system_prompt: str = ""
@@ -912,7 +911,6 @@ class AppController:
   self.ui_gemini_cli_path = self.project.get("gemini_cli", {}).get("binary_path", "gemini")
   self._update_gcli_adapter(self.ui_gemini_cli_path)
   self.ui_word_wrap = proj_meta.get("word_wrap", True)
-  self.ui_summary_only = proj_meta.get("summary_only", False)
   self.ui_auto_add_history = disc_sec.get("auto_add", False)
   self.ui_global_system_prompt = self.config.get("ai", {}).get("system_prompt", "")
   
@@ -952,7 +950,7 @@ class AppController:
   bg_shader.get_bg().enabled = gui_cfg.get("bg_shader_enabled", False)
   
   _default_windows = {
-   "Context Hub": True,
+   "Project Settings": True,
    "Files & Media": True,
    "AI Settings": True,
    "MMA Dashboard": True,
@@ -2006,7 +2004,6 @@ class AppController:
   self.ui_auto_scroll_comms = proj.get("project", {}).get("auto_scroll_comms", True)
   self.ui_auto_scroll_tool_calls = proj.get("project", {}).get("auto_scroll_tool_calls", True)
   self.ui_word_wrap = proj.get("project", {}).get("word_wrap", True)
-  self.ui_summary_only = proj.get("project", {}).get("summary_only", False)
   agent_tools_cfg = proj.get("agent", {}).get("tools", {})
   self.ui_agent_tools = {t: agent_tools_cfg.get(t, True) for t in models.AGENT_TOOL_NAMES}
   # MMA Tracks
@@ -2458,7 +2455,6 @@ class AppController:
   proj["project"]["main_context"] = self.ui_project_main_context
   proj["project"]["active_preset"] = self.ui_project_preset_name
   proj["project"]["word_wrap"] = self.ui_word_wrap
-  proj["project"]["summary_only"] = self.ui_summary_only
   proj["project"]["auto_scroll_comms"] = self.ui_auto_scroll_comms
   proj["project"]["auto_scroll_tool_calls"] = self.ui_auto_scroll_tool_calls
   proj.setdefault("gemini_cli", {})["binary_path"] = self.ui_gemini_cli_path

src/gui_2.py

@@ -215,7 +215,6 @@ class App:
   self.show_windows.setdefault("Tier 4: QA", False)
   self.show_windows.setdefault('External Tools', False)
   self.show_windows.setdefault('Shader Editor', False)
-  self.show_windows.setdefault('Session Hub', False)
   self.ui_multi_viewport = gui_cfg.get("multi_viewport", False)
   self.layout_presets = self.config.get("layout_presets", {})
   self._new_preset_name = ""
@@ -639,9 +638,9 @@ class App:
       self._tool_log_cache = log_raw
     self._tool_log_dirty = False
    
-   if self.show_windows.get("Context Hub", False):
+   if self.show_windows.get("Project Settings", False):
-    exp, opened = imgui.begin("Context Hub", self.show_windows["Context Hub"])
+    exp, opened = imgui.begin("Project Settings", self.show_windows["Project Settings"])
-    self.show_windows["Context Hub"] = bool(opened)
+    self.show_windows["Project Settings"] = bool(opened)
     if exp:
      if imgui.begin_tab_bar('context_hub_tabs'):
       if imgui.begin_tab_item('Projects')[0]:
@@ -650,9 +649,6 @@ class App:
       if imgui.begin_tab_item('Paths')[0]:
        self._render_paths_panel()
        imgui.end_tab_item()
-      if imgui.begin_tab_item('Context Presets')[0]:
-       self._render_context_presets_panel()
-       imgui.end_tab_item()
       imgui.end_tab_bar()
     imgui.end()
    if self.show_windows.get("Files & Media", False):
@@ -727,50 +723,20 @@ class App:
     exp, opened = imgui.begin("Discussion Hub", self.show_windows["Discussion Hub"])
     self.show_windows["Discussion Hub"] = bool(opened)
     if exp:
-    # Top part for the history
+     if imgui.begin_tab_bar("discussion_hub_tabs"):
-     imgui.begin_child("HistoryChild", size=(0, -self.ui_discussion_split_h))
+      if imgui.begin_tab_item("Discussion")[0]:
-     if self.perf_profiling_enabled: self.perf_monitor.start_component("_render_discussion_panel")
+       self._render_discussion_tab()
-     self._render_discussion_panel()
-     if self.perf_profiling_enabled: self.perf_monitor.end_component("_render_discussion_panel")
-     imgui.end_child()
-     # Splitter
-     imgui.button("###discussion_splitter", imgui.ImVec2(-1, 4))
-     if imgui.is_item_active():
-      self.ui_discussion_split_h = max(150.0, min(imgui.get_window_height() - 150.0, self.ui_discussion_split_h - imgui.get_io().mouse_delta.y))
-     # Bottom part with tabs for message and response
-     # Detach controls
-     imgui.push_style_var(imgui.StyleVar_.item_spacing, imgui.ImVec2(10, 4))
-     ch1, self.ui_separate_message_panel = imgui.checkbox("Pop Out Message", self.ui_separate_message_panel)
-     imgui.same_line()
-     ch2, self.ui_separate_response_panel = imgui.checkbox("Pop Out Response", self.ui_separate_response_panel)
-     if ch1: self.show_windows["Message"] = self.ui_separate_message_panel
-     if ch2: self.show_windows["Response"] = self.ui_separate_response_panel
-     imgui.pop_style_var()
-
-     show_message_tab = not self.ui_separate_message_panel
-     show_response_tab = not self.ui_separate_response_panel
-
-     if show_message_tab or show_response_tab:
-      if imgui.begin_tab_bar("discussion_tabs"):
-       # Task: Auto-focus Response tab when response received
-       tab_flags = imgui.TabItemFlags_.none
-       if self._autofocus_response_tab:
-        tab_flags = imgui.TabItemFlags_.set_selected
-        self._autofocus_response_tab = False
-        self.controller._autofocus_response_tab = False
-
-       if show_message_tab:
-        if imgui.begin_tab_item("Message", None)[0]:
-         self._render_message_panel()
        imgui.end_tab_item()
-       if show_response_tab:
+      if imgui.begin_tab_item("Context Composition")[0]:
-        if imgui.begin_tab_item("Response", None, tab_flags)[0]:
+       self._render_context_composition_panel()
-         self._render_response_panel()
+       imgui.end_tab_item()
+      if imgui.begin_tab_item("Snapshot")[0]:
+       self._render_snapshot_tab()
+       imgui.end_tab_item()
+      if imgui.begin_tab_item("Takes")[0]:
+       self._render_takes_panel()
        imgui.end_tab_item()
       imgui.end_tab_bar()
-     else:
-      imgui.text_disabled("Message & Response panels are detached.")
-
     imgui.end()
    if self.show_windows.get("Operations Hub", False):
     exp, opened = imgui.begin("Operations Hub", self.show_windows["Operations Hub"])
@@ -845,8 +811,6 @@ class App:
    if self.show_windows.get("Diagnostics", False):
     self._render_diagnostics_panel()
 
-   self._render_session_hub()
-
    self.perf_monitor.end_frame()
    # ---- Modals / Popups
    with self._pending_dialog_lock:
@@ -1702,7 +1666,6 @@ class App:
    models.save_config(self.config)
    self.ai_status = "config saved"
   ch, self.ui_word_wrap = imgui.checkbox("Word-Wrap (Read-only panels)", self.ui_word_wrap)
-  ch, self.ui_summary_only = imgui.checkbox("Summary Only (send file structure, not full content)", self.ui_summary_only)
   ch, self.ui_auto_scroll_comms = imgui.checkbox("Auto-scroll Comms History", self.ui_auto_scroll_comms)
   ch, self.ui_auto_scroll_tool_calls = imgui.checkbox("Auto-scroll Tool History", self.ui_auto_scroll_tool_calls)
   if self.perf_profiling_enabled: self.perf_monitor.end_component("_render_projects_panel")
@@ -2085,13 +2048,98 @@ class App:
   if self.perf_profiling_enabled: self.perf_monitor.end_component("_render_diagnostics_panel")
   imgui.end()
 
- def _render_session_hub(self) -> None:
+ def _render_discussion_tab(self) -> None:
-  if self.show_windows.get('Session Hub', False):
+  imgui.begin_child("HistoryChild", size=(0, -self.ui_discussion_split_h))
-   exp, opened = imgui.begin('Session Hub', self.show_windows['Session Hub'])
+  if self.perf_profiling_enabled: self.perf_monitor.start_component("_render_discussion_panel")
-   self.show_windows['Session Hub'] = bool(opened)
+  self._render_discussion_panel()
-   if exp:
+  if self.perf_profiling_enabled: self.perf_monitor.end_component("_render_discussion_panel")
-    if imgui.begin_tab_bar('session_hub_tabs'):
+  imgui.end_child()
-     if imgui.begin_tab_item('Aggregate MD')[0]:
+  imgui.button("###discussion_splitter", imgui.ImVec2(-1, 4))
+  if imgui.is_item_active():
+   self.ui_discussion_split_h = max(150.0, min(imgui.get_window_height() - 150.0, self.ui_discussion_split_h - imgui.get_io().mouse_delta.y))
+  imgui.push_style_var(imgui.StyleVar_.item_spacing, imgui.ImVec2(10, 4))
+  ch1, self.ui_separate_message_panel = imgui.checkbox("Pop Out Message", self.ui_separate_message_panel)
+  imgui.same_line()
+  ch2, self.ui_separate_response_panel = imgui.checkbox("Pop Out Response", self.ui_separate_response_panel)
+  if ch1: self.show_windows["Message"] = self.ui_separate_message_panel
+  if ch2: self.show_windows["Response"] = self.ui_separate_response_panel
+  imgui.pop_style_var()
+  show_message_tab = not self.ui_separate_message_panel
+  show_response_tab = not self.ui_separate_response_panel
+  if show_message_tab or show_response_tab:
+   if imgui.begin_tab_bar("discussion_tabs"):
+    tab_flags = imgui.TabItemFlags_.none
+    if self._autofocus_response_tab:
+     tab_flags = imgui.TabItemFlags_.set_selected
+     self._autofocus_response_tab = False
+     self.controller._autofocus_response_tab = False
+    if show_message_tab:
+     if imgui.begin_tab_item("Message", None)[0]:
+      self._render_message_panel()
+      imgui.end_tab_item()
+    if show_response_tab:
+     if imgui.begin_tab_item("Response", None, tab_flags)[0]:
+      self._render_response_panel()
+      imgui.end_tab_item()
+    imgui.end_tab_bar()
+  else:
+   imgui.text_disabled("Message & Response panels are detached.")
+
+ def _render_context_composition_panel(self) -> None:
+  imgui.text("Context Composition")
+  imgui.separator()
+  if imgui.begin_table("ctx_comp_table", 2, imgui.TableFlags_.resizable | imgui.TableFlags_.borders):
+   imgui.table_setup_column("File", imgui.TableColumnFlags_.width_stretch)
+   imgui.table_setup_column("Flags", imgui.TableColumnFlags_.width_fixed, 120)
+   imgui.table_headers_row()
+   for i, f_item in enumerate(self.files):
+    imgui.table_next_row()
+    imgui.table_set_column_index(0)
+    imgui.text(f_item.path if hasattr(f_item, "path") else str(f_item))
+    imgui.table_set_column_index(1)
+    if hasattr(f_item, "auto_aggregate"):
+     changed_agg, f_item.auto_aggregate = imgui.checkbox(f"Agg##cc{i}", f_item.auto_aggregate)
+     imgui.same_line()
+     changed_full, f_item.force_full = imgui.checkbox(f"Full##cc{i}", f_item.force_full)
+   imgui.end_table()
+  imgui.separator()
+  imgui.text("Screenshots")
+  for i, s in enumerate(self.screenshots):
+   imgui.text(s)
+  imgui.separator()
+  imgui.text("Presets")
+  presets = self.controller.project.get('context_presets', {})
+  preset_names = [""] + sorted(presets.keys())
+  active = getattr(self, "ui_active_context_preset", "")
+  if active not in preset_names:
+   active = ""
+  try:
+   idx = preset_names.index(active)
+  except ValueError:
+   idx = 0
+  ch, new_idx = imgui.combo("##ctx_preset", idx, preset_names)
+  if ch:
+   self.ui_active_context_preset = preset_names[new_idx]
+   if preset_names[new_idx]:
+    self.load_context_preset(preset_names[new_idx])
+  imgui.same_line()
+  changed, new_name = imgui.input_text("##new_preset", getattr(self, "ui_new_context_preset_name", ""))
+  if changed:
+   self.ui_new_context_preset_name = new_name
+  imgui.same_line()
+  if imgui.button("Save##ctx"):
+   if getattr(self, "ui_new_context_preset_name", "").strip():
+    self.save_context_preset(self.ui_new_context_preset_name.strip())
+    self.ui_new_context_preset_name = ""
+  imgui.same_line()
+  if imgui.button("Delete##ctx"):
+   if getattr(self, "ui_active_context_preset", ""):
+    self.delete_context_preset(self.ui_active_context_preset)
+    self.ui_active_context_preset = ""
+
+ def _render_snapshot_tab(self) -> None:
+  if imgui.begin_tab_bar("snapshot_tabs"):
+   if imgui.begin_tab_item("Aggregate MD")[0]:
     display_md = self.last_aggregate_markdown
     if self.ui_focus_agent:
      tier_usage = self.mma_tier_usage.get(self.ui_focus_agent)
@@ -2104,7 +2152,6 @@ class App:
         if cp_name in self._focus_md_cache:
          display_md = self._focus_md_cache[cp_name]
         else:
-           # Generate focused aggregate
          flat = src.project_manager.flat_config(self.controller.project, self.active_discussion)
          cp = self.controller.project.get('context_presets', {}).get(cp_name)
          if cp:
@@ -2116,19 +2163,73 @@ class App:
     if imgui.button("Copy"):
      imgui.set_clipboard_text(display_md)
     imgui.begin_child("last_agg_md", imgui.ImVec2(0, 0), True)
-      markdown_helper.render(display_md, context_id="session_hub_agg")
+    markdown_helper.render(display_md, context_id="snapshot_agg")
     imgui.end_child()
     imgui.end_tab_item()
-     if imgui.begin_tab_item('System Prompt')[0]:
+   if imgui.begin_tab_item("System Prompt")[0]:
     if imgui.button("Copy"):
      imgui.set_clipboard_text(self.last_resolved_system_prompt)
     imgui.begin_child("last_sys_prompt", imgui.ImVec2(0, 0), True)
-      markdown_helper.render(self.last_resolved_system_prompt, context_id="session_hub_sys")
+    markdown_helper.render(self.last_resolved_system_prompt, context_id="snapshot_sys")
     imgui.end_child()
     imgui.end_tab_item()
    imgui.end_tab_bar()
-   imgui.end()
 
+ def _render_takes_panel(self) -> None:
+  imgui.text("Takes & Synthesis")
+  imgui.separator()
+  discussions = self.project.get('discussion', {}).get('discussions', {})
+  if not hasattr(self, 'ui_synthesis_selected_takes'):
+   self.ui_synthesis_selected_takes = {name: False for name in discussions}
+  if not hasattr(self, 'ui_synthesis_prompt'):
+   self.ui_synthesis_prompt = ""
+  if imgui.begin_table("takes_table", 3, imgui.TableFlags_.resizable | imgui.TableFlags_.borders):
+   imgui.table_setup_column("Name", imgui.TableColumnFlags_.width_stretch)
+   imgui.table_setup_column("Entries", imgui.TableColumnFlags_.width_fixed, 80)
+   imgui.table_setup_column("Actions", imgui.TableColumnFlags_.width_fixed, 150)
+   imgui.table_headers_row()
+   for name, disc in discussions.items():
+    imgui.table_next_row()
+    imgui.table_set_column_index(0)
+    is_active = name == self.active_discussion
+    if is_active:
+     imgui.text_colored(C_IN, name)
+    else:
+     imgui.text(name)
+    imgui.table_set_column_index(1)
+    history = disc.get('history', [])
+    imgui.text(f"{len(history)}")
+    imgui.table_set_column_index(2)
+    if imgui.button(f"Switch##{name}"):
+     self._switch_discussion(name)
+    imgui.same_line()
+    if name != "main" and imgui.button(f"Delete##{name}"):
+     del discussions[name]
+   imgui.end_table()
+  imgui.separator()
+  imgui.text("Synthesis")
+  imgui.text("Select takes to synthesize:")
+  for name in discussions:
+   _, self.ui_synthesis_selected_takes[name] = imgui.checkbox(name, self.ui_synthesis_selected_takes.get(name, False))
+  imgui.spacing()
+  imgui.text("Synthesis Prompt:")
+  _, self.ui_synthesis_prompt = imgui.input_text_multiline("##synthesis_prompt", self.ui_synthesis_prompt, imgui.ImVec2(-1, 100))
+  if imgui.button("Generate Synthesis"):
+   selected = [name for name, sel in self.ui_synthesis_selected_takes.items() if sel]
+   if len(selected) > 1:
+    from src import synthesis_formatter
+    takes_dict = {name: discussions.get(name, {}).get('history', []) for name in selected}
+    diff_text = synthesis_formatter.format_takes_diff(takes_dict)
+    prompt = f"{self.ui_synthesis_prompt}\n\nHere are the variations:\n{diff_text}"
+    new_name = "synthesis_take"
+    counter = 1
+    while new_name in discussions:
+     new_name = f"synthesis_take_{counter}"
+     counter += 1
+    self._create_discussion(new_name)
+    with self._disc_entries_lock:
+     self.disc_entries.append({"role": "user", "content": prompt, "collapsed": False, "ts": project_manager.now_ts()})
+    self._handle_generate_send()
  def _render_markdown_test(self) -> None:
   imgui.text("Markdown Test Panel")
   imgui.separator()
@@ -2652,6 +2753,8 @@ def hello():
    if imgui.selectable("None", not self.ui_active_persona)[0]:
     self.ui_active_persona = ""
    for pname in sorted(personas.keys()):
+    if not pname:
+     continue
     if imgui.selectable(pname, pname == self.ui_active_persona)[0]:
      self.ui_active_persona = pname
      if pname in personas:
@@ -4219,6 +4322,8 @@ def hello():
      from src import ai_client
      ai_client.set_bias_profile(None)
     for bname in sorted(self.controller.bias_profiles.keys()):
+     if not bname:
+      continue
      if imgui.selectable(bname, bname == getattr(self, 'ui_active_bias_profile', ""))[0]:
       self.ui_active_bias_profile = bname
       from src import ai_client

tests/test_context_composition_panel.py

@@ -0,0 +1,42 @@
+import pytest
+import inspect
+
+
+def test_context_composition_panel_replaces_placeholder():
+    import src.gui_2 as gui_2
+
+    source = inspect.getsource(gui_2.App._gui_func)
+    assert "_render_context_composition_placeholder" not in source, (
+        "Placeholder should be replaced"
+    )
+    assert "_render_context_composition_panel" in source, (
+        "Should have _render_context_composition_panel"
+    )
+
+
+def test_context_composition_has_save_load_buttons():
+    import src.gui_2 as gui_2
+
+    source = inspect.getsource(gui_2.App._render_context_composition_panel)
+    assert "Save as Preset" in source or "save" in source.lower(), (
+        "Should have Save functionality"
+    )
+    assert "Load Preset" in source or "load" in source.lower(), (
+        "Should have Load functionality"
+    )
+
+
+def test_context_composition_shows_files():
+    import src.gui_2 as gui_2
+
+    source = inspect.getsource(gui_2.App._render_context_composition_panel)
+    assert "files" in source.lower() or "Files" in source, "Should show files"
+
+
+def test_context_composition_has_preset_list():
+    import src.gui_2 as gui_2
+
+    source = inspect.getsource(gui_2.App._render_context_composition_panel)
+    assert "context_presets" in source or "preset" in source.lower(), (
+        "Should reference presets"
+    )

tests/test_context_presets_removal.py

@@ -0,0 +1,14 @@
+import pytest
+import inspect
+
+
+def test_context_presets_tab_removed_from_project_settings():
+    import src.gui_2 as gui_2
+
+    source = inspect.getsource(gui_2.App._gui_func)
+    assert "Context Presets" not in source, (
+        "Context Presets tab should be removed from Project Settings"
+    )
+    assert "_render_context_presets_panel" not in source, (
+        "Context presets panel call should be removed"
+    )

tests/test_gui2_layout.py

@@ -6,7 +6,7 @@ def test_gui2_hubs_exist_in_show_windows(app_instance: App) -> None:
     This ensures they will be available in the 'Windows' menu.
     """
  expected_hubs = [
-  "Context Hub",
+  "Project Settings",
   "AI Settings",
   "Discussion Hub",
   "Operations Hub",

tests/test_layout_reorganization.py

@@ -15,7 +15,7 @@ def test_new_hubs_defined_in_show_windows(mock_app: App) -> None:
  This ensures they will be available in the 'Windows' menu.
  """
  expected_hubs = [
-  "Context Hub",
+  "Project Settings",
   "AI Settings",
   "Discussion Hub",
   "Operations Hub",
@@ -53,7 +53,7 @@ def test_hub_windows_exist_in_gui2(app_instance_simple: Any) -> None:
  """
  Verifies that the new Hub windows are present in the show_windows dictionary.
  """
- hubs = ["Context Hub", "AI Settings", "Discussion Hub", "Operations Hub"]
+ hubs = ["Project Settings", "AI Settings", "Discussion Hub", "Operations Hub"]
  for hub in hubs:
   assert hub in app_instance_simple.show_windows
 

tests/test_project_settings_rename.py

@@ -0,0 +1,22 @@
+import pytest
+import inspect
+
+
+def test_context_hub_renamed_to_project_settings():
+    import src.gui_2 as gui_2
+
+    source = inspect.getsource(gui_2.App._gui_func)
+    assert "Project Settings" in source, (
+        "Context Hub should be renamed to Project Settings"
+    )
+    assert '"Context Hub"' not in source, '"Context Hub" string should be removed'
+
+
+def test_show_windows_key_updated():
+    import src.app_controller as app_controller
+
+    source = inspect.getsource(app_controller.AppController)
+    assert '"Project Settings"' in source or "'Project Settings'" in source, (
+        "show_windows key should be Project Settings"
+    )
+    assert '"Context Hub"' not in source, '"Context Hub" key should be removed'

tests/test_session_hub_merge.py

@@ -0,0 +1,42 @@
+import pytest
+import inspect
+
+
+def test_session_hub_window_removed():
+    import src.gui_2 as gui_2
+
+    source = inspect.getsource(gui_2.App._gui_func)
+    assert "Session Hub" not in source, "Session Hub window should be removed"
+
+
+def test_discussion_hub_has_snapshot_tab():
+    import src.gui_2 as gui_2
+
+    source = inspect.getsource(gui_2.App._gui_func)
+    assert "Snapshot" in source, "Discussion Hub should have Snapshot tab"
+    assert "_render_snapshot_tab" in source, "Discussion Hub should call _render_snapshot_tab"
+
+
+def test_discussion_hub_has_context_composition_placeholder():
+    import src.gui_2 as gui_2
+
+    source = inspect.getsource(gui_2.App._gui_func)
+    assert "Context Composition" in source, (
+        "Discussion Hub should have Context Composition tab placeholder"
+    )
+
+
+def test_discussion_hub_has_takes_tab():
+    import src.gui_2 as gui_2
+
+    source = inspect.getsource(gui_2.App._gui_func)
+    assert "Takes" in source, "Discussion Hub should have Takes tab"
+
+
+def test_show_windows_no_session_hub():
+    import src.app_controller as app_controller
+
+    source = inspect.getsource(app_controller.AppController)
+    assert "Session Hub" not in source, (
+        "Session Hub should be removed from show_windows"
+    )

tests/test_takes_panel.py

@@ -0,0 +1,16 @@
+import pytest
+import inspect
+
+
+def test_takes_tab_replaces_placeholder():
+    import src.gui_2 as gui_2
+
+    source = inspect.getsource(gui_2.App._gui_func)
+    assert "_render_takes_placeholder" not in source, "Placeholder should be replaced"
+
+
+def test_takes_panel_has_synthesis():
+    import src.gui_2 as gui_2
+
+    source = inspect.getsource(gui_2.App._render_takes_panel)
+    assert "synthesis" in source.lower(), "Should have synthesis functionality"

tests/test_ui_summary_only_removal.py

@@ -0,0 +1,75 @@
+import pytest
+import inspect
+from src import models
+
+
+def test_ui_summary_only_not_in_projects_panel():
+    import src.gui_2 as gui_2
+
+    source = inspect.getsource(gui_2.App._render_projects_panel)
+    assert "ui_summary_only" not in source, (
+        "ui_summary_only checkbox should be removed from Projects panel"
+    )
+    assert "Summary Only" not in source, (
+        "Summary Only label should be removed from Projects panel"
+    )
+
+
+def test_ui_summary_only_not_in_app_controller_projects():
+    import src.app_controller as app_controller
+
+    source = inspect.getsource(app_controller.AppController)
+    assert "ui_summary_only" not in source, (
+        "ui_summary_only should be removed from AppController"
+    )
+
+
+def test_file_item_has_per_file_flags():
+    item = models.FileItem(path="test.py")
+    assert hasattr(item, "auto_aggregate")
+    assert hasattr(item, "force_full")
+    assert item.auto_aggregate is True
+    assert item.force_full is False
+
+
+def test_file_item_serialization_with_flags():
+    item = models.FileItem(path="test.py", auto_aggregate=False, force_full=True)
+    data = item.to_dict()
+
+    assert data["auto_aggregate"] is False
+    assert data["force_full"] is True
+
+    restored = models.FileItem.from_dict(data)
+    assert restored.auto_aggregate is False
+    assert restored.force_full is True
+
+
+def test_project_without_summary_only_loads():
+    proj = {"project": {"name": "test", "paths": []}}
+    assert proj.get("project", {}).get("summary_only") is None
+
+
+def test_aggregate_from_items_respects_auto_aggregate():
+    from pathlib import Path
+    from src import aggregate
+
+    items = [
+        {
+            "path": Path("file1.py"),
+            "entry": "file1.py",
+            "content": "print('hello')",
+            "auto_aggregate": True,
+            "force_full": False,
+        },
+        {
+            "path": Path("file2.py"),
+            "entry": "file2.py",
+            "content": "print('world')",
+            "auto_aggregate": False,
+            "force_full": False,
+        },
+    ]
+
+    result = aggregate._build_files_section_from_items(items)
+    assert "file1.py" in result
+    assert "file2.py" not in result