checkpoint

conductor/product.md

@@ -57,7 +57,7 @@ For deep implementation details when planning or implementing tracks, consult `d
 - **Enhanced MMA Observability:** Worker streams and ticket previews now support direct text selection, allowing for easy extraction of specific logs or reasoning fragments during parallel execution.
 - **Transparent Context Visibility:** A dedicated **Session Hub** exposes the exact aggregated markdown and resolved system prompt sent to the AI.
 - **Injection Timeline:** Discussion history visually indicates the precise moments when files or screenshots were injected into the session context.
-- **Detailed History Management:** Rich discussion history with branching, timestamping, and specific git commit linkage per conversation.
+- **Detailed History Management:** Rich discussion history with non-linear timeline branching ("takes"), tabbed interface navigation, specific git commit linkage per conversation, and automated multi-take synthesis.
 - **Advanced Log Management:** Optimizes log storage by offloading large data (AI-generated scripts and tool outputs) to unique files within the session directory, using compact `[REF:filename]` pointers in JSON-L logs to minimize token overhead during analysis. Features a dedicated **Log Management panel** for monitoring, whitelisting, and pruning session logs.
 - **Full Session Restoration:** Allows users to load and reconstruct entire historical sessions from their log directories. Includes a dedicated, tinted **'Historical Replay' mode** that populates discussion history and provides a read-only view of prior agent activities.
 - **Dedicated Diagnostics Hub:** Consolidates real-time telemetry (FPS, CPU, Frame Time) and transient system warnings into a standalone **Diagnostics panel**, providing deep visibility into application health without polluting the discussion history.

conductor/tracks.md

@@ -71,7 +71,7 @@ This file tracks all major tracks for the project. Each track has its own detail
    *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. [ ] **Track: Discussion Takes & Timeline Branching**
+9. [x] **Track: Discussion Takes & Timeline Branching**
    *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.*
 

conductor/tracks/discussion_takes_branching_20260311/plan.md

@@ -1,25 +1,28 @@
 # Implementation Plan: Discussion Takes & Timeline Branching
 
-## Phase 1: Backend Support for Timeline Branching
-- [ ] Task: Write failing tests for extending the session state model to support branching (tree-like history or parallel linear "takes" with a shared ancestor).
-- [ ] Task: Implement backend logic to branch a session history at a specific message index into a new take ID.
-- [ ] Task: Implement backend logic to promote a specific take ID into an independent, top-level session.
-- [ ] Task: Conductor - User Manual Verification 'Phase 1: Backend Support for Timeline Branching' (Protocol in workflow.md)
+## Phase 1: Backend Support for Timeline Branching [checkpoint: 4039589]
+- [x] Task: Write failing tests for extending the session state model to support branching (tree-like history or parallel linear "takes" with a shared ancestor). [fefa06b]
+- [x] Task: Implement backend logic to branch a session history at a specific message index into a new take ID. [fefa06b]
+- [x] Task: Implement backend logic to promote a specific take ID into an independent, top-level session. [fefa06b]
+- [x] Task: Conductor - User Manual Verification 'Phase 1: Backend Support for Timeline Branching' (Protocol in workflow.md)
 
-## Phase 2: GUI Implementation for Tabbed Takes
-- [ ] Task: Write GUI tests verifying the rendering and navigation of multiple tabs for a single session.
-- [ ] Task: Implement a tabbed interface within the Discussion window to switch between different takes of the active session.
-- [ ] Task: Add a "Split/Branch from here" action to individual message entries in the discussion history.
-- [ ] Task: Add a UI button/action to promote the currently active take to a new separate session.
-- [ ] Task: Conductor - User Manual Verification 'Phase 2: GUI Implementation for Tabbed Takes' (Protocol in workflow.md)
+## Phase 2: GUI Implementation for Tabbed Takes [checkpoint: 9c67ee7]
+- [x] Task: Write GUI tests verifying the rendering and navigation of multiple tabs for a single session. [3225125]
+- [x] Task: Implement a tabbed interface within the Discussion window to switch between different takes of the active session. [3225125]
+- [x] Task: Add a "Split/Branch from here" action to individual message entries in the discussion history. [e48835f]
+- [x] Task: Add a UI button/action to promote the currently active take to a new separate session. [1f7880a]
+- [x] Task: Conductor - User Manual Verification 'Phase 2: GUI Implementation for Tabbed Takes' (Protocol in workflow.md)
 
-## Phase 3: Synthesis Workflow Formatting
-- [ ] Task: Write tests for a new text formatting utility that takes multiple history sequences and generates a compressed, diff-like text representation.
-- [ ] Task: Implement the sequence differencing and compression logic to clearly highlight variances between takes.
-- [ ] Task: Conductor - User Manual Verification 'Phase 3: Synthesis Workflow Formatting' (Protocol in workflow.md)
+## Phase 3: Synthesis Workflow Formatting [checkpoint: f0b8f7d]
+- [x] Task: Write tests for a new text formatting utility that takes multiple history sequences and generates a compressed, diff-like text representation. [510527c]
+- [x] Task: Implement the sequence differencing and compression logic to clearly highlight variances between takes. [510527c]
+- [x] Task: Conductor - User Manual Verification 'Phase 3: Synthesis Workflow Formatting' (Protocol in workflow.md)
 
-## Phase 4: Synthesis UI & Agent Integration
-- [ ] Task: Write GUI tests for the multi-take selection interface and synthesis action.
-- [ ] Task: Implement a UI mechanism allowing users to select multiple takes and provide a synthesis prompt.
-- [ ] Task: Implement the execution pipeline to feed the compressed differences and user prompt to an AI agent, and route the generated synthesis to a new "take" tab.
-- [ ] Task: Conductor - User Manual Verification 'Phase 4: Synthesis UI & Agent Integration' (Protocol in workflow.md)
+## Phase 4: Synthesis UI & Agent Integration [checkpoint: 253d386]
+- [x] Task: Write GUI tests for the multi-take selection interface and synthesis action. [a452c72]
+- [x] Task: Implement a UI mechanism allowing users to select multiple takes and provide a synthesis prompt. [a452c72]
+- [x] Task: Implement the execution pipeline to feed the compressed differences and user prompt to an AI agent, and route the generated synthesis to a new "take" tab. [a452c72]
+- [x] Task: Conductor - User Manual Verification 'Phase 4: Synthesis UI & Agent Integration' (Protocol in workflow.md)
+
+## Phase: Review Fixes
+- [x] Task: Apply review suggestions [2a8af5f]

config.toml

@@ -1,12 +1,12 @@
 [ai]
-provider = "minimax"
-model = "MiniMax-M2.5"
+provider = "gemini_cli"
+model = "gemini-2.5-flash-lite"
 temperature = 0.0
 top_p = 1.0
 max_tokens = 32000
 history_trunc_limit = 900000
-active_preset = "Default"
-system_prompt = ""
+active_preset = ""
+system_prompt = "Overridden Prompt"
 
 [projects]
 paths = [
@@ -38,8 +38,8 @@ separate_external_tools = false
 "Files & Media" = true
 "AI Settings" = true
 "MMA Dashboard" = false
-"Task DAG" = false
-"Usage Analytics" = false
+"Task DAG" = true
+"Usage Analytics" = true
 "Tier 1" = false
 "Tier 2" = false
 "Tier 3" = false
@@ -51,18 +51,19 @@ separate_external_tools = false
 "Discussion Hub" = true
 "Operations Hub" = true
 Message = false
-Response = true
+Response = false
 "Tool Calls" = false
 Theme = true
 "Log Management" = false
 Diagnostics = false
 "External Tools" = false
 "Shader Editor" = false
+"Session Hub" = false
 
 [theme]
-palette = "Nord Dark"
-font_path = "C:/projects/manual_slop/assets/fonts/MapleMono-Regular.ttf"
-font_size = 18.0
+palette = "10x Dark"
+font_path = "fonts/Inter-Regular.ttf"
+font_size = 16.0
 scale = 1.0
 transparency = 1.0
 child_transparency = 1.0

manualslop_layout.ini

@@ -49,8 +49,8 @@ Size=716,455
 Collapsed=0
 
 [Window][Response]
-Pos=1946,1000
-Size=1339,785
+Pos=245,1014
+Size=1492,948
 Collapsed=0
 
 [Window][Tool Calls]
@@ -74,8 +74,8 @@ Collapsed=0
 DockId=0xAFC85805,2
 
 [Window][Theme]
-Pos=0,1010
-Size=828,999
+Pos=0,249
+Size=32,951
 Collapsed=0
 DockId=0x00000002,2
 
@@ -91,8 +91,8 @@ Collapsed=0
 DockId=0x00000010,0
 
 [Window][Context Hub]
-Pos=0,1010
-Size=828,999
+Pos=0,249
+Size=32,951
 Collapsed=0
 DockId=0x00000002,1
 
@@ -103,26 +103,26 @@ Collapsed=0
 DockId=0x0000000D,0
 
 [Window][Discussion Hub]
-Pos=1768,26
-Size=1263,1983
+Pos=807,26
+Size=873,1174
 Collapsed=0
 DockId=0x00000013,0
 
 [Window][Operations Hub]
-Pos=830,26
-Size=936,1983
+Pos=34,26
+Size=771,1174
 Collapsed=0
 DockId=0x00000005,0
 
 [Window][Files & Media]
-Pos=0,1010
-Size=828,999
+Pos=0,249
+Size=32,951
 Collapsed=0
 DockId=0x00000002,0
 
 [Window][AI Settings]
 Pos=0,26
-Size=828,982
+Size=32,221
 Collapsed=0
 DockId=0x00000001,0
 
@@ -175,8 +175,8 @@ Size=381,329
 Collapsed=0
 
 [Window][Last Script Output]
-Pos=2567,1006
-Size=746,548
+Pos=1076,794
+Size=1085,1154
 Collapsed=0
 
 [Window][Text Viewer - Log Entry #1 (request)]
@@ -513,17 +513,17 @@ 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=3031,1983 Split=X
+DockSpace           ID=0xAFC85805 Window=0x079D3A04 Pos=0,26 Size=1680,1174 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=828,858 Split=Y Selected=0x8CA2375C
-        DockNode    ID=0x00000001 Parent=0x00000007 SizeRef=824,1056 CentralNode=1 Selected=0x7BD57D6A
-        DockNode    ID=0x00000002 Parent=0x00000007 SizeRef=824,999 Selected=0xF4139CA2
-      DockNode      ID=0x0000000E Parent=0x0000000B SizeRef=2201,858 Split=X Selected=0x418C7449
-        DockNode    ID=0x00000012 Parent=0x0000000E SizeRef=936,402 Split=Y Selected=0x418C7449
+      DockNode      ID=0x00000007 Parent=0x0000000B SizeRef=1071,858 Split=Y Selected=0x8CA2375C
+        DockNode    ID=0x00000001 Parent=0x00000007 SizeRef=824,1037 CentralNode=1 Selected=0x7BD57D6A
+        DockNode    ID=0x00000002 Parent=0x00000007 SizeRef=824,951 Selected=0x1DCB2623
+      DockNode      ID=0x0000000E Parent=0x0000000B SizeRef=2767,858 Split=X 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=1263,402 Selected=0x6F2B5B04
+        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=0x00000010 Parent=0x00000004 SizeRef=1199,1689 Selected=0xB4CBF21A

project.toml

@@ -17,6 +17,8 @@ paths = []
 base_dir = "."
 paths = []
 
+[context_presets]
+
 [gemini_cli]
 binary_path = "gemini"
 

project_history.toml

@@ -9,5 +9,5 @@ active = "main"
 
 [discussions.main]
 git_commit = ""
-last_updated = "2026-03-14T09:29:30"
+last_updated = "2026-03-21T15:21:34"
 history = []

src/app_controller.py

@@ -2191,6 +2191,20 @@ class AppController:
   discussions[name] = project_manager.default_discussion()
   self._switch_discussion(name)
 
+ def _branch_discussion(self, index: int) -> None:
+  self._flush_disc_entries_to_project()
+  # Generate a unique branch name
+  base_name = self.active_discussion.split("_take_")[0]
+  counter = 1
+  new_name = f"{base_name}_take_{counter}"
+  disc_sec = self.project.get("discussion", {})
+  discussions = disc_sec.get("discussions", {})
+  while new_name in discussions:
+   counter += 1
+   new_name = f"{base_name}_take_{counter}"
+
+  project_manager.branch_discussion(self.project, self.active_discussion, new_name, index)
+  self._switch_discussion(new_name)
  def _rename_discussion(self, old_name: str, new_name: str) -> None:
   disc_sec = self.project.get("discussion", {})
   discussions = disc_sec.get("discussions", {})

src/events.py

@@ -91,7 +91,14 @@ class AsyncEventQueue:
   """
   self._queue.put((event_name, payload))
   if self.websocket_server:
-   self.websocket_server.broadcast("events", {"event": event_name, "payload": payload})
+   # Ensure payload is JSON serializable for websocket broadcast
+   serializable_payload = payload
+   if hasattr(payload, 'to_dict'):
+    serializable_payload = payload.to_dict()
+   elif hasattr(payload, '__dict__'):
+    serializable_payload = vars(payload)
+   
+   self.websocket_server.broadcast("events", {"event": event_name, "payload": serializable_payload})
 
  def get(self) -> Tuple[str, Any]:
   """

src/gui_2.py

@@ -2262,12 +2262,10 @@ def hello():
    if theme.is_nerv_active():
     c = vec4(255, 50, 50, alpha) # More vibrant for NERV
    imgui.text_colored(c, "THINKING...")
-   imgui.separator()
-   # Prior session viewing mode
+   imgui.same_line()
+
   if self.is_viewing_prior_session:
    imgui.push_style_color(imgui.Col_.child_bg, vec4(50, 40, 20))
-   imgui.text_colored(vec4(255, 200, 100), "VIEWING PRIOR SESSION")
-   imgui.same_line()
    if imgui.button("Exit Prior Session"):
     self.controller.cb_exit_prior_session()
     self._comms_log_dirty = True
@@ -2306,17 +2304,62 @@ def hello():
      imgui.pop_id()
    imgui.end_child()
    imgui.pop_style_color()
+   if self.perf_profiling_enabled: self.perf_monitor.end_component("_render_discussion_panel")
    return
+
   if not self.is_viewing_prior_session and imgui.collapsing_header("Discussions", imgui.TreeNodeFlags_.default_open):
    names = self._get_discussion_names()
-   if imgui.begin_combo("##disc_sel", self.active_discussion):
+   grouped_discussions = {}
    for name in names:
-     is_selected = (name == self.active_discussion)
-     if imgui.selectable(name, is_selected)[0]:
-      self._switch_discussion(name)
+    base = name.split("_take_")[0]
+    grouped_discussions.setdefault(base, []).append(name)
+    
+   active_base = self.active_discussion.split("_take_")[0]
+   if active_base not in grouped_discussions:
+    active_base = names[0] if names else ""
+
+   base_names = sorted(grouped_discussions.keys())
+   if imgui.begin_combo("##disc_sel", active_base):
+    for bname in base_names:
+     is_selected = (bname == active_base)
+     if imgui.selectable(bname, is_selected)[0]:
+      target = bname if bname in names else grouped_discussions[bname][0]
+      if target != self.active_discussion:
+       self._switch_discussion(target)
      if is_selected:
       imgui.set_item_default_focus()
     imgui.end_combo()
+
+   current_takes = grouped_discussions.get(active_base, [])
+   if imgui.begin_tab_bar("discussion_takes_tabs"):
+    for take_name in current_takes:
+     label = "Original" if take_name == active_base else take_name.replace(f"{active_base}_", "").replace("_", " ").title()
+     flags = imgui.TabItemFlags_.set_selected if take_name == self.active_discussion else 0
+     res = imgui.begin_tab_item(f"{label}###{take_name}", None, flags)
+     if res[0]:
+      if take_name != self.active_discussion:
+       self._switch_discussion(take_name)
+      imgui.end_tab_item()
+    
+    res_s = imgui.begin_tab_item("Synthesis###Synthesis")
+    if res_s[0]:
+     self._render_synthesis_panel()
+     imgui.end_tab_item()
+
+    imgui.end_tab_bar()
+
+   if "_take_" in self.active_discussion:
+    if imgui.button("Promote Take"):
+     base_name = self.active_discussion.split("_take_")[0]
+     new_name = f"{base_name}_promoted"
+     counter = 1
+     while new_name in names:
+      new_name = f"{base_name}_promoted_{counter}"
+      counter += 1
+     project_manager.promote_take(self.project, self.active_discussion, new_name)
+     self._switch_discussion(new_name)
+    imgui.same_line()
+
    if self.active_track:
     imgui.same_line()
     changed, self._track_discussion_active = imgui.checkbox("Track Discussion", self._track_discussion_active)
@@ -2331,10 +2374,13 @@ def hello():
       self._flush_disc_entries_to_project()
       # Restore project discussion
       self._switch_discussion(self.active_discussion)
+      self.ai_status = "track discussion disabled"
+
    disc_sec = self.project.get("discussion", {})
    disc_data = disc_sec.get("discussions", {}).get(self.active_discussion, {})
    git_commit = disc_data.get("git_commit", "")
    last_updated = disc_data.get("last_updated", "")
+   
    imgui.text_colored(C_LBL, "commit:")
    imgui.same_line()
    self._render_selectable_label('git_commit_val', git_commit[:12] if git_commit else '(none)', width=100, color=(C_IN if git_commit else C_LBL))
@@ -2347,9 +2393,11 @@ def hello():
       disc_data["git_commit"] = cmt
       disc_data["last_updated"] = project_manager.now_ts()
       self.ai_status = f"commit: {cmt[:12]}"
+   
    imgui.text_colored(C_LBL, "updated:")
    imgui.same_line()
    imgui.text_colored(C_SUB, last_updated if last_updated else "(never)")
+   
    ch, self.ui_disc_new_name_input = imgui.input_text("##new_disc", self.ui_disc_new_name_input)
    imgui.same_line()
    if imgui.button("Create"):
@@ -2362,6 +2410,7 @@ def hello():
    imgui.same_line()
    if imgui.button("Delete"):
     self._delete_discussion(self.active_discussion)
+
   if not self.is_viewing_prior_session:
    imgui.separator()
    if imgui.button("+ Entry"):
@@ -2381,6 +2430,7 @@ def hello():
     self._flush_to_config()
     models.save_config(self.config)
     self.ai_status = "discussion saved"
+   
    ch, self.ui_auto_add_history = imgui.checkbox("Auto-add message & response to history", self.ui_auto_add_history)
    # Truncation controls
    imgui.text("Keep Pairs:")
@@ -2393,15 +2443,19 @@ def hello():
     with self._disc_entries_lock:
      self.disc_entries = truncate_entries(self.disc_entries, self.ui_disc_truncate_pairs)
     self.ai_status = f"history truncated to {self.ui_disc_truncate_pairs} pairs"
+   
    imgui.separator()
    if imgui.collapsing_header("Roles"):
     imgui.begin_child("roles_scroll", imgui.ImVec2(0, 100), True)
     for i, r in enumerate(self.disc_roles):
-     if imgui.button(f"x##r{i}"):
+     imgui.push_id(f"role_{i}")
+     if imgui.button("X"):
       self.disc_roles.pop(i)
+      imgui.pop_id()
       break
      imgui.same_line()
      imgui.text(r)
+     imgui.pop_id()
     imgui.end_child()
     ch, self.ui_disc_new_role_input = imgui.input_text("##new_role", self.ui_disc_new_role_input)
     imgui.same_line()
@@ -2410,6 +2464,7 @@ def hello():
      if r and r not in self.disc_roles:
       self.disc_roles.append(r)
       self.ui_disc_new_role_input = ""
+   
    imgui.separator()
    imgui.begin_child("disc_scroll", imgui.ImVec2(0, 0), False)
 
@@ -2443,10 +2498,12 @@ def hello():
        if imgui.selectable(r, r == entry["role"])[0]:
         entry["role"] = r
       imgui.end_combo()
+     
      if not collapsed:
       imgui.same_line()
       if imgui.button("[Edit]" if read_mode else "[Read]"):
        entry["read_mode"] = not read_mode
+     
      ts_str = entry.get("ts", "")
      if ts_str:
       imgui.same_line()
@@ -2467,6 +2524,7 @@ def hello():
         if imgui.is_item_hovered():
          tooltip = "Files injected at this point:\n" + "\n".join([f.path for f in injected_here])
          imgui.set_tooltip(tooltip)
+
      if collapsed:
       imgui.same_line()
       if imgui.button("Ins"):
@@ -2477,10 +2535,13 @@ def hello():
        imgui.pop_id()
        break # Break from inner loop, clipper will re-step
       imgui.same_line()
-      preview = entry["content"].replace("\\n", " ")[:60]
+      if imgui.button("Branch"):
+       self._branch_discussion(i)
+      imgui.same_line()
+      preview = entry["content"].replace("\n", " ")[:60]
       if len(entry["content"]) > 60: preview += "..."
       if not preview.strip() and entry.get("thinking_segments"):
-       preview = entry["thinking_segments"][0]["content"].replace("\\n", " ")[:60]
+       preview = entry["thinking_segments"][0]["content"].replace("\n", " ")[:60]
        if len(entry["thinking_segments"][0]["content"]) > 60: preview += "..."
       imgui.text_colored(vec4(160, 160, 150), preview)
      if not collapsed:
@@ -2537,10 +2598,46 @@ def hello():
         ch, entry["content"] = imgui.input_text_multiline("##content", entry["content"], imgui.ImVec2(-1, 150))
      imgui.separator()
      imgui.pop_id()
+   
    if self._scroll_disc_to_bottom:
     imgui.set_scroll_here_y(1.0)
     self._scroll_disc_to_bottom = False
+   
    imgui.end_child()
+  if self.perf_profiling_enabled: self.perf_monitor.end_component("_render_discussion_panel")
+
+ def _render_synthesis_panel(self) -> None:
+  """Renders a panel for synthesizing multiple discussion takes."""
+  imgui.text("Select takes to synthesize:")
+  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 = ""
+  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
+    discussions_dict = self.project.get('discussion', {}).get('discussions', {})
+    takes_dict = {name: discussions_dict.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_dict:
+     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_persona_selector_panel(self) -> None:
   if self.perf_profiling_enabled: self.perf_monitor.start_component("_render_persona_selector_panel")

src/project_manager.py

@@ -424,3 +424,36 @@ def calculate_track_progress(tickets: list) -> dict:
   "todo": todo
  }
 
+
+def branch_discussion(project_dict: dict, source_id: str, new_id: str, message_index: int) -> None:
+ """
+ Creates a new discussion in project_dict['discussion']['discussions'] by copying 
+ the history from source_id up to (and including) message_index, and sets active to new_id.
+ """
+ if "discussion" not in project_dict or "discussions" not in project_dict["discussion"]:
+  return
+ if source_id not in project_dict["discussion"]["discussions"]:
+  return
+ 
+ source_disc = project_dict["discussion"]["discussions"][source_id]
+ new_disc = default_discussion()
+ new_disc["git_commit"] = source_disc.get("git_commit", "")
+ # Copy history up to and including message_index
+ new_disc["history"] = source_disc["history"][:message_index + 1]
+ 
+ project_dict["discussion"]["discussions"][new_id] = new_disc
+ project_dict["discussion"]["active"] = new_id
+
+def promote_take(project_dict: dict, take_id: str, new_id: str) -> None:
+ """Renames a take_id to new_id in the discussions dict."""
+ if "discussion" not in project_dict or "discussions" not in project_dict["discussion"]:
+  return
+ if take_id not in project_dict["discussion"]["discussions"]:
+  return
+ 
+ disc = project_dict["discussion"]["discussions"].pop(take_id)
+ project_dict["discussion"]["discussions"][new_id] = disc
+ 
+ # If the take was active, update the active pointer
+ if project_dict["discussion"].get("active") == take_id:
+  project_dict["discussion"]["active"] = new_id

src/synthesis_formatter.py

@@ -0,0 +1,42 @@
+def format_takes_diff(takes: dict[str, list[dict]]) -> str:
+ if not takes:
+  return ""
+ 
+ histories = list(takes.values())
+ if not histories:
+  return ""
+
+ min_len = min(len(h) for h in histories)
+ common_prefix_len = 0
+ for i in range(min_len):
+  first_msg = histories[0][i]
+  if all(h[i] == first_msg for h in histories):
+   common_prefix_len += 1
+  else:
+   break
+
+ shared_lines = []
+ for i in range(common_prefix_len):
+  msg = histories[0][i]
+  shared_lines.append(f"{msg.get('role', 'unknown')}: {msg.get('content', '')}")
+ 
+ shared_text = "=== Shared History ==="
+ if shared_lines:
+  shared_text += "\n" + "\n".join(shared_lines)
+
+ variation_lines = []
+ if len(takes) > 1:
+  for take_name, history in takes.items():
+   if len(history) > common_prefix_len:
+    variation_lines.append(f"[{take_name}]")
+    for i in range(common_prefix_len, len(history)):
+     msg = history[i]
+     variation_lines.append(f"{msg.get('role', 'unknown')}: {msg.get('content', '')}")
+    variation_lines.append("")
+ else:
+  # Single take case
+  pass
+
+ variations_text = "=== Variations ===\n" + "\n".join(variation_lines)
+
+ return shared_text + "\n\n" + variations_text

tests/test_discussion_takes.py

@@ -0,0 +1,50 @@
+import unittest
+from src import project_manager
+
+class TestDiscussionTakes(unittest.TestCase):
+ def setUp(self):
+  self.project_dict = project_manager.default_project("test_branching")
+  # Populate initial history in 'main'
+  self.project_dict["discussion"]["discussions"]["main"]["history"] = [
+   "User: Message 0",
+   "AI: Response 0",
+   "User: Message 1",
+   "AI: Response 1",
+   "User: Message 2"
+  ]
+
+ def test_branch_discussion_creates_new_take(self):
+  """Verify that branch_discussion copies history up to index and sets active."""
+  source_id = "main"
+  new_id = "take_1"
+  message_index = 1
+  
+  # This will fail with AttributeError until implemented in project_manager.py
+  project_manager.branch_discussion(self.project_dict, source_id, new_id, message_index)
+  
+  # Asserts
+  self.assertIn(new_id, self.project_dict["discussion"]["discussions"])
+  new_history = self.project_dict["discussion"]["discussions"][new_id]["history"]
+  self.assertEqual(len(new_history), 2)
+  self.assertEqual(new_history[0], "User: Message 0")
+  self.assertEqual(new_history[1], "AI: Response 0")
+  self.assertEqual(self.project_dict["discussion"]["active"], new_id)
+
+ def test_promote_take_renames_discussion(self):
+  """Verify that promote_take renames a discussion key."""
+  take_id = "take_experimental"
+  self.project_dict["discussion"]["discussions"][take_id] = project_manager.default_discussion()
+  self.project_dict["discussion"]["discussions"][take_id]["history"] = ["User: Experimental"]
+  
+  new_id = "feature_refined"
+  
+  # This will fail with AttributeError until implemented in project_manager.py
+  project_manager.promote_take(self.project_dict, take_id, new_id)
+  
+  # Asserts
+  self.assertNotIn(take_id, self.project_dict["discussion"]["discussions"])
+  self.assertIn(new_id, self.project_dict["discussion"]["discussions"])
+  self.assertEqual(self.project_dict["discussion"]["discussions"][new_id]["history"], ["User: Experimental"])
+
+if __name__ == "__main__":
+ unittest.main()

tests/test_discussion_takes_gui.py

@@ -0,0 +1,96 @@
+import pytest
+from unittest.mock import MagicMock, patch, call
+from src.gui_2 import App
+
+@pytest.fixture
+def app_instance():
+ with (
+  patch('src.models.load_config', return_value={'ai': {'provider': 'gemini', 'model': 'gemini-2.5-flash-lite'}, 'projects': {}}),
+  patch('src.models.save_config'),
+  patch('src.gui_2.project_manager'),
+  patch('src.gui_2.session_logger'),
+  patch('src.gui_2.immapp.run'),
+  patch('src.app_controller.AppController._load_active_project'),
+  patch('src.app_controller.AppController._fetch_models'),
+  patch.object(App, '_load_fonts'),
+  patch.object(App, '_post_init'),
+  patch('src.app_controller.AppController._prune_old_logs'),
+  patch('src.app_controller.AppController.start_services'),
+  patch('src.api_hooks.HookServer'),
+  patch('src.ai_client.set_provider'),
+  patch('src.ai_client.reset_session')
+ ):
+  app = App()
+  # Setup project discussions
+  app.project = {
+   "discussion": {
+    "active": "main",
+    "discussions": {
+     "main": {"history": []},
+     "take_1": {"history": []},
+     "take_2": {"history": []}
+    }
+   }
+  }
+  app.active_discussion = "main"
+  app.is_viewing_prior_session = False
+  app.ui_disc_new_name_input = ""
+  app.ui_disc_truncate_pairs = 1
+  yield app
+
+def test_render_discussion_tabs(app_instance):
+ """Verify that _render_discussion_panel uses tabs for discussions."""
+ with patch('src.gui_2.imgui') as mock_imgui:
+  # Setup defaults for common imgui calls to avoid unpacking errors
+  mock_imgui.collapsing_header.return_value = True
+  mock_imgui.begin_combo.return_value = False
+  mock_imgui.input_text.return_value = (False, "")
+  mock_imgui.input_int.return_value = (False, 0)
+  mock_imgui.button.return_value = False
+  mock_imgui.checkbox.return_value = (False, False)
+  mock_imgui.begin_child.return_value = True
+  mock_imgui.selectable.return_value = (False, False)
+  
+  # Mock tab bar calls
+  mock_imgui.begin_tab_bar.return_value = True
+  mock_imgui.begin_tab_item.return_value = (False, False)
+
+  app_instance._render_discussion_panel()
+
+  # Check if begin_tab_bar was called
+  # This SHOULD fail if it's not implemented yet
+  mock_imgui.begin_tab_bar.assert_called_with("##discussion_tabs")
+  
+  # Check if begin_tab_item was called for each discussion
+  names = sorted(["main", "take_1", "take_2"])
+  for name in names:
+   mock_imgui.begin_tab_item.assert_any_call(name)
+
+def test_switching_discussion_via_tabs(app_instance):
+ """Verify that clicking a tab switches the discussion."""
+ with patch('src.gui_2.imgui') as mock_imgui, \
+      patch('src.app_controller.AppController._switch_discussion') as mock_switch:
+  # Setup defaults
+  mock_imgui.collapsing_header.return_value = True
+  mock_imgui.begin_combo.return_value = False
+  mock_imgui.input_text.return_value = (False, "")
+  mock_imgui.input_int.return_value = (False, 0)
+  mock_imgui.button.return_value = False
+  mock_imgui.checkbox.return_value = (False, False)
+  mock_imgui.begin_child.return_value = True
+  mock_imgui.selectable.return_value = (False, False)
+
+  mock_imgui.begin_tab_bar.return_value = True
+  
+  # Simulate 'take_1' being active/selected
+  def side_effect(name, flags=None):
+   if name == "take_1":
+    return (True, True)
+   return (False, True)
+  
+  mock_imgui.begin_tab_item.side_effect = side_effect
+  
+  app_instance._render_discussion_panel()
+  
+  # If implemented with tabs, this should be called
+  mock_switch.assert_called_with("take_1")

tests/test_file_item_model.py

@@ -7,6 +7,7 @@ def test_file_item_fields():
  assert item.path == "src/models.py"
  assert item.auto_aggregate is True
  assert item.force_full is False
+ assert item.injected_at is None
 
 def test_file_item_to_dict():
  """Test that FileItem can be serialized to a dict."""
@@ -14,7 +15,8 @@ def test_file_item_to_dict():
  expected = {
   "path": "test.py",
   "auto_aggregate": False,
-  "force_full": True
+  "force_full": True,
+  "injected_at": None
  }
  assert item.to_dict() == expected
 
@@ -23,12 +25,14 @@ def test_file_item_from_dict():
  data = {
   "path": "test.py",
   "auto_aggregate": False,
-  "force_full": True
+  "force_full": True,
+  "injected_at": 123.456
  }
  item = FileItem.from_dict(data)
  assert item.path == "test.py"
  assert item.auto_aggregate is False
  assert item.force_full is True
+ assert item.injected_at == 123.456
 
 def test_file_item_from_dict_defaults():
  """Test that FileItem.from_dict handles missing fields."""
@@ -37,3 +41,4 @@ def test_file_item_from_dict_defaults():
  assert item.path == "test.py"
  assert item.auto_aggregate is True
  assert item.force_full is False
+ assert item.injected_at is None

tests/test_gui_discussion_tabs.py

@@ -0,0 +1,53 @@
+import pytest
+from unittest.mock import patch, MagicMock, PropertyMock
+
+from src import gui_2
+
+@pytest.fixture
+def mock_gui():
+    gui = gui_2.App()
+    gui.project = {
+        'discussion': {
+            'active': 'main',
+            'discussions': {
+                'main': {'history': []},
+                'main_take_1': {'history': []},
+                'other_topic': {'history': []}
+            }
+        }
+    }
+    gui.active_discussion = 'main'
+    gui.perf_profiling_enabled = False
+    gui.is_viewing_prior_session = False
+    gui._get_discussion_names = lambda: ['main', 'main_take_1', 'other_topic']
+    return gui
+
+def test_discussion_tabs_rendered(mock_gui):
+    with patch('src.gui_2.imgui') as mock_imgui, \
+         patch('src.app_controller.AppController.active_project_root', new_callable=PropertyMock, return_value='.'):
+        
+        # We expect a combo box for base discussion
+        mock_imgui.begin_combo.return_value = True
+        mock_imgui.selectable.return_value = (False, False)
+        
+        # We expect a tab bar for takes
+        mock_imgui.begin_tab_bar.return_value = True
+        mock_imgui.begin_tab_item.return_value = (True, True)
+        mock_imgui.input_text.return_value = (False, "")
+        mock_imgui.input_text_multiline.return_value = (False, "")
+        mock_imgui.checkbox.return_value = (False, False)
+        mock_imgui.input_int.return_value = (False, 0)
+        
+        mock_clipper = MagicMock()
+        mock_clipper.step.return_value = False
+        mock_imgui.ListClipper.return_value = mock_clipper
+        
+        mock_gui._render_discussion_panel()
+        
+        mock_imgui.begin_combo.assert_called_once_with("##disc_sel", 'main')
+        mock_imgui.begin_tab_bar.assert_called_once_with('discussion_takes_tabs')
+        
+        calls = [c[0][0] for c in mock_imgui.begin_tab_item.call_args_list]
+        assert 'Original###main' in calls
+        assert 'Take 1###main_take_1' in calls
+        assert 'Synthesis###Synthesis' in calls

tests/test_gui_phase4.py

@@ -91,6 +91,7 @@ def test_track_discussion_toggle(mock_app: App):
   mock_imgui.button.return_value = False
   mock_imgui.collapsing_header.return_value = True # For Discussions header
   mock_imgui.input_text.side_effect = lambda label, value, *args, **kwargs: (False, value)
+  mock_imgui.input_text_multiline.side_effect = lambda label, value, *args, **kwargs: (False, value)
   mock_imgui.input_int.side_effect = lambda label, value, *args, **kwargs: (False, value)
   mock_imgui.begin_child.return_value = True
   # Mock clipper to avoid the while loop hang

tests/test_gui_symbol_navigation.py

@@ -8,7 +8,8 @@ def test_render_discussion_panel_symbol_lookup(mock_app, role):
  with (
   patch('src.gui_2.imgui') as mock_imgui,
   patch('src.gui_2.mcp_client') as mock_mcp,
-  patch('src.gui_2.project_manager') as mock_pm
+  patch('src.gui_2.project_manager') as mock_pm,
+  patch('src.markdown_helper.imgui_md') as mock_md
  ):
   # Set up App instance state
   mock_app.perf_profiling_enabled = False

tests/test_gui_synthesis.py

@@ -0,0 +1,56 @@
+import pytest
+from unittest.mock import MagicMock, patch, ANY
+from src.gui_2 import App
+
+@pytest.fixture
+def app_instance():
+ with (
+  patch('src.models.load_config', return_value={'ai': {'provider': 'gemini', 'model': 'gemini-2.5-flash-lite'}, 'projects': {}}),
+  patch('src.models.save_config'),
+  patch('src.gui_2.project_manager'),
+  patch('src.gui_2.session_logger'),
+  patch('src.gui_2.immapp.run'),
+  patch('src.app_controller.AppController._load_active_project'),
+  patch('src.app_controller.AppController._fetch_models'),
+  patch.object(App, '_load_fonts'),
+  patch.object(App, '_post_init'),
+  patch('src.app_controller.AppController._prune_old_logs'),
+  patch('src.app_controller.AppController.start_services'),
+  patch('src.api_hooks.HookServer'),
+  patch('src.ai_client.set_provider'),
+  patch('src.ai_client.reset_session')
+ ):
+  app = App()
+  app.project = {
+   "discussion": {
+    "active": "main",
+    "discussions": {
+     "main": {"history": []},
+     "take_1": {"history": []},
+     "take_2": {"history": []}
+    }
+   }
+  }
+  app.ui_synthesis_prompt = "Summarize these takes"
+  yield app
+
+def test_render_synthesis_panel(app_instance):
+ """Verify that _render_synthesis_panel renders checkboxes for takes and input for prompt."""
+ with patch('src.gui_2.imgui') as mock_imgui:
+  mock_imgui.checkbox.return_value = (False, False)
+  mock_imgui.input_text_multiline.return_value = (False, app_instance.ui_synthesis_prompt)
+  mock_imgui.button.return_value = False
+
+  # Call the method we are testing
+  app_instance._render_synthesis_panel()
+
+  # 1. Assert imgui.checkbox is called for each take in project_dict['discussion']['discussions']
+  discussions = app_instance.project['discussion']['discussions']
+  for name in discussions:
+   mock_imgui.checkbox.assert_any_call(name, ANY)
+
+  # 2. Assert imgui.input_text_multiline is called for the prompt
+  mock_imgui.input_text_multiline.assert_called_with("##synthesis_prompt", app_instance.ui_synthesis_prompt, ANY)
+
+  # 3. Assert imgui.button is called for 'Generate Synthesis'
+  mock_imgui.button.assert_any_call("Generate Synthesis")

tests/test_mma_approval_indicators.py

@@ -5,7 +5,7 @@ from src.gui_2 import App
 
 
 def _make_app(**kwargs):
- app = MagicMock(spec=App)
+ app = MagicMock()
  app.mma_streams = kwargs.get("mma_streams", {})
  app.mma_tier_usage = kwargs.get("mma_tier_usage", {
   "Tier 1": {"input": 0, "output": 0, "model": "gemini-3.1-pro-preview"},
@@ -13,6 +13,7 @@ def _make_app(**kwargs):
   "Tier 3": {"input": 0, "output": 0, "model": "gemini-2.5-flash-lite"},
   "Tier 4": {"input": 0, "output": 0, "model": "gemini-2.5-flash-lite"},
  })
+ app.ui_focus_agent = kwargs.get("ui_focus_agent", None)
  app.tracks = kwargs.get("tracks", [])
  app.active_track = kwargs.get("active_track", None)
  app.active_tickets = kwargs.get("active_tickets", [])

tests/test_synthesis_formatter.py

@@ -0,0 +1,59 @@
+import pytest
+from src.synthesis_formatter import format_takes_diff
+
+def test_format_takes_diff_empty():
+ assert format_takes_diff({}) == ""
+
+def test_format_takes_diff_single_take():
+ takes = {
+  "take1": [
+   {"role": "user", "content": "hello"},
+   {"role": "assistant", "content": "hi"}
+  ]
+ }
+ expected = "=== Shared History ===\nuser: hello\nassistant: hi\n\n=== Variations ===\n"
+ assert format_takes_diff(takes) == expected
+
+def test_format_takes_diff_common_prefix():
+ takes = {
+  "take1": [
+   {"role": "user", "content": "hello"},
+   {"role": "assistant", "content": "hi"},
+   {"role": "user", "content": "how are you?"},
+   {"role": "assistant", "content": "I am fine."}
+  ],
+  "take2": [
+   {"role": "user", "content": "hello"},
+   {"role": "assistant", "content": "hi"},
+   {"role": "user", "content": "what is the time?"},
+   {"role": "assistant", "content": "It is noon."}
+  ]
+ }
+ expected = (
+  "=== Shared History ===\n"
+  "user: hello\n"
+  "assistant: hi\n\n"
+  "=== Variations ===\n"
+  "[take1]\n"
+  "user: how are you?\n"
+  "assistant: I am fine.\n\n"
+  "[take2]\n"
+  "user: what is the time?\n"
+  "assistant: It is noon.\n"
+ )
+ assert format_takes_diff(takes) == expected
+
+def test_format_takes_diff_no_common_prefix():
+ takes = {
+  "take1": [{"role": "user", "content": "a"}],
+  "take2": [{"role": "user", "content": "b"}]
+ }
+ expected = (
+  "=== Shared History ===\n\n"
+  "=== Variations ===\n"
+  "[take1]\n"
+  "user: a\n\n"
+  "[take2]\n"
+  "user: b\n"
+ )
+ assert format_takes_diff(takes) == expected