From 9437af6cb1e61fcb2501418d05f06ce243b02a65 Mon Sep 17 00:00:00 2001
From: Ed_ <edwardgz@gmail.com>
Date: Mon, 29 Jun 2026 21:17:04 -0400
Subject: [PATCH] chore: archive 27 diagnostic scripts used during the
 missing-end investigation

These scripts were created during the search for the "Missing End()" imgui error
that the user reported on 2026-06-29. They are throwaway diagnostic tools;
their purpose was to find the orphan imgui.end_child() call in
render_tier_stream_panel (commit c2155593) and verify the fix worked.

No production code depends on these. They are kept for archival purposes
only so future debugging of similar imbalanced-begin/end issues has a
reference.

Scripts included:
  - apply_fix.py              : the actual applied fix to src/gui_2.py
  - fix_orphan.py/fix_orphan2.py : iterative attempts at removing the orphan
  - fix_indent.py             : was used to attempt an indent fix; superseded
  - remove_orphan.py          : rejected because pattern didn't match
  - find_imbalance.py         : the canonical begin/end imbalance detector
  - find_extras.py            : finds orphan imgui.end() (window-level)
  - find_ends.py              : dumps all imgui.end() lines with context
  - peek*.py (8 files)        : various context-dump helpers used during
                                investigation
  - check_dynamic.py          : dynamic-control-flow imbalanced tracker
  - check_indents.py          : indent diagnostic for L7086
  - diag_install_heuristic.py : earlier diagnostic for install heuristic
  - inspect_imgui_apis.py     : dumps imgui-bundle API surface
  - search_indent*.py (3)     : indent search helpers
  - window_balance.py         : dedicated imgui.begin/imgui.end balance check
  - apply_fix.py/remove_orphan2.py : final iterations that succeeded

None of these are imported by src/ or tests/. The fix commit c2155593 is
the actual production change; these scripts are just the trail of breadcrumbs
left during the investigation.
---
 .../apply_fix.py                              | 19 +++++++
 .../check_dynamic.py                          | 47 +++++++++++++++++
 .../check_indents.py                          | 19 +++++++
 .../diag_install_heuristic.py                 | 11 ++++
 .../find_ends.py                              | 11 ++++
 .../find_extras.py                            | 24 +++++++++
 .../find_imbalance.py                         | 29 +++++++++++
 .../fix_indent.py                             | 16 ++++++
 .../fix_orphan.py                             | 37 ++++++++++++++
 .../inspect_imgui_apis.py                     | 40 +++++++++++++++
 .../default_layout_install_20260629/peek.py   |  7 +++
 .../default_layout_install_20260629/peek2.py  |  7 +++
 .../default_layout_install_20260629/peek3.py  | 11 ++++
 .../default_layout_install_20260629/peek4.py  |  8 +++
 .../default_layout_install_20260629/peek5.py  |  7 +++
 .../default_layout_install_20260629/peek6.py  |  7 +++
 .../default_layout_install_20260629/peek7.py  |  7 +++
 .../default_layout_install_20260629/peek8.py  | 16 ++++++
 .../remove_orphan.py                          | 42 ++++++++++++++++
 .../remove_orphan2.py                         | 23 +++++++++
 .../search_indent.py                          |  9 ++++
 .../search_indent2.py                         |  6 +++
 .../search_indent3.py                         |  5 ++
 .../window_balance.py                         | 50 +++++++++++++++++++
 24 files changed, 458 insertions(+)
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/apply_fix.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/check_dynamic.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/check_indents.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/diag_install_heuristic.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/find_ends.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/find_extras.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/find_imbalance.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/fix_indent.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/fix_orphan.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/inspect_imgui_apis.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/peek.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/peek2.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/peek3.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/peek4.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/peek5.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/peek6.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/peek7.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/peek8.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/remove_orphan.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/remove_orphan2.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/search_indent.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/search_indent2.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/search_indent3.py
 create mode 100644 scripts/tier2/artifacts/default_layout_install_20260629/window_balance.py

diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/apply_fix.py b/scripts/tier2/artifacts/default_layout_install_20260629/apply_fix.py
new file mode 100644
index 00000000..75cdc9d7
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/apply_fix.py
@@ -0,0 +1,19 @@
+"""Fix the orphan end_child and the indent issue. Single commit."""
+from pathlib import Path
+
+f = Path("src/gui_2.py")
+data = f.read_text(encoding="utf-8", errors="replace")
+
+# Fix: change 4 spaces to 5 spaces before the render_selectable_label
+# (was incorrectly dedented in earlier commit, broke the begin_child body scope)
+old_line = "    render_selectable_label(app, f'stream_t3_"
+new_line = "     render_selectable_label(app, f'stream_t3_"
+if old_line in data:
+    new_data = data.replace(old_line, new_line, 1)
+    f.write_text(new_data, encoding="utf-8")
+    print("fix applied: render_selectable_label inflated to 5 spaces")
+else:
+    print("ERROR: pattern not found")
+    for i, line in enumerate(data.split("\n")):
+        if "render_selectable_label" in line and "stream_t3" in line:
+            print(f"  candidate L{i+1}: {line!r}")
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/check_dynamic.py b/scripts/tier2/artifacts/default_layout_install_20260629/check_dynamic.py
new file mode 100644
index 00000000..148db5aa
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/check_dynamic.py
@@ -0,0 +1,47 @@
+"""Check imgui begin/end balance dynamically (simulate runtime paths)."""
+import re
+from pathlib import Path
+
+text = Path("src/gui_2.py").read_text(encoding="utf-8", errors="replace")
+lines = text.split("\n")
+
+# Track all begin/end pairs across all types
+patterns = {
+    "begin": re.compile(r"\bimgui\.begin(?:_(\w+))?\("),
+    "end": re.compile(r"\bimgui\.end(?:_(\w+))?\("),
+}
+
+# Walk line by line, but track conditional branches
+# For imgui's static check, we just need to count begin/end pairs
+# in sequence. The "Missing End" comes from extra ends, not missing ends.
+
+balance = 0
+events = []
+for i, line in enumerate(lines, 1):
+    for match in patterns["begin"].finditer(line):
+        subtype = match.group(1) or "default"
+        events.append((i, "begin", subtype))
+    for match in patterns["end"].finditer(line):
+        subtype = match.group(1) or "default"
+        events.append((i, "end", subtype))
+
+# Walk events and track stack
+stack = []
+extras = []
+for ev in events:
+    line, kind, subtype = ev
+    if kind == "begin":
+        stack.append(ev)
+    else:
+        if stack:
+            stack.pop()
+        else:
+            extras.append(ev)
+
+# Check which begin has no matching end
+print(f"=== LEFTOVER begins (count: {len(stack)}) ===")
+for ev in stack:
+    print(f"  L{ev[0]}: {ev[1]} {ev[2]}")
+print(f"=== EXTRAS ends (count: {len(extras)}) ===")
+for ev in extras:
+    print(f"  L{ev[0]}: {ev[1]} {ev[2]}")
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/check_indents.py b/scripts/tier2/artifacts/default_layout_install_20260629/check_indents.py
new file mode 100644
index 00000000..6529c5b4
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/check_indents.py
@@ -0,0 +1,19 @@
+from pathlib import Path
+data = Path("src/gui_2.py").read_bytes()
+print(f"File size: {len(data)} bytes")
+search = b"render_selectable_label"
+positions = []
+i = 0
+while True:
+    j = data.find(search, i)
+    if j == -1: break
+    positions.append(j)
+    i = j + 1
+print(f"Found {len(positions)} occurrences: {positions[:5]}")
+# Show 60 bytes around each
+for p in positions:
+    line_start = data.rfind(b"\n", 0, p) + 1
+    line_end = data.find(b"\n", p)
+    line = data[line_start:line_end]
+    leading = len(line) - len(line.lstrip(b" "))
+    print(f"  At offset {p}: leading={leading}, line={line!r}")
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/diag_install_heuristic.py b/scripts/tier2/artifacts/default_layout_install_20260629/diag_install_heuristic.py
new file mode 100644
index 00000000..d2df9ae9
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/diag_install_heuristic.py
@@ -0,0 +1,11 @@
+from pathlib import Path
+dst = Path("manualslop_layout.ini")
+dst_text = dst.read_text(encoding="utf-8", errors="replace") if dst.exists() else ""
+print("size:", len(dst_text), "bytes")
+print("has '[Window][' header:", "[Window][" in dst_text)
+is_empty = len(dst_text) < 1000 or "[Window][" not in dst_text
+print("is_dst_empty heuristic:", is_empty)
+print("would-install:", is_empty)
+print()
+print("=== full content ===")
+print(dst_text)
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/find_ends.py b/scripts/tier2/artifacts/default_layout_install_20260629/find_ends.py
new file mode 100644
index 00000000..db51ad91
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/find_ends.py
@@ -0,0 +1,11 @@
+"""Find ALL imgui.end() lines in the file with context."""
+import re
+from pathlib import Path
+
+text = Path("src/gui_2.py").read_text(encoding="utf-8", errors="replace")
+lines = text.split("\n")
+
+# ALL imgui.end() (not end_X)
+for i, line in enumerate(lines, 1):
+    if re.search(r"\bimgui\.end\(\)", line):
+        print(f"L{i}: {line.strip()[:80]}")
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/find_extras.py b/scripts/tier2/artifacts/default_layout_install_20260629/find_extras.py
new file mode 100644
index 00000000..1a41dcc8
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/find_extras.py
@@ -0,0 +1,24 @@
+"""Find imgui.begin matching L3757 and L8809 (they're EXTRA ends)."""
+import re
+from pathlib import Path
+
+text = Path("src/gui_2.py").read_text(encoding="utf-8", errors="replace")
+lines = text.split("\n")
+
+# Find the 4 imgui.begin calls with their context
+print("=== ALL imgui.begin calls ===")
+for i, line in enumerate(lines, 1):
+    if re.search(r"\bimgui\.begin\(", line):
+        print(f"  L{i}: {line.strip()[:80]}")
+
+print()
+print("=== imgui.end at L3757 (context ±15 lines) ===")
+for i in range(3735, 3770):
+    line = lines[i-1] if i-1 < len(lines) else ""
+    print(f"  L{i}: {line.strip()[:80]}")
+
+print()
+print("=== imgui.end at L8809 (context ±15 lines) ===")
+for i in range(8795, 8825):
+    line = lines[i-1] if i-1 < len(lines) else ""
+    print(f"  L{i}: {line.strip()[:80]}")
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/find_imbalance.py b/scripts/tier2/artifacts/default_layout_install_20260629/find_imbalance.py
new file mode 100644
index 00000000..eda7ecec
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/find_imbalance.py
@@ -0,0 +1,29 @@
+"""Find imgui.begin_child without matching imgui.end_child in src/gui_2.py (corrected)."""
+import re
+from pathlib import Path
+
+text = Path("src/gui_2.py").read_text(encoding="utf-8", errors="replace")
+lines = text.splitlines()
+
+stack = []
+extras = []
+for i, line in enumerate(lines, 1):
+    n_begin = len(re.findall(r"\bimgui\.begin_child\(", line))
+    n_end = len(re.findall(r"\bimgui\.end_child\(\)", line))
+    for _ in range(n_begin):
+        stack.append((i, line.strip()))
+    for _ in range(n_end):
+        if stack:
+            stack.pop()
+        else:
+            extras.append((i, line.strip()))
+
+print(f"=== Leftover begin_child (no matching end_child) ===")
+print(f"count: {len(stack)}")
+for ln, txt in stack:
+    print(f"  L{ln}: {txt}")
+print()
+print(f"=== Extra end_child (no matching begin_child) ===")
+print(f"count: {len(extras)}")
+for ln, txt in extras:
+    print(f"  L{ln}: {txt}")
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/fix_indent.py b/scripts/tier2/artifacts/default_layout_install_20260629/fix_indent.py
new file mode 100644
index 00000000..52e254ec
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/fix_indent.py
@@ -0,0 +1,16 @@
+"""Fix the pre-existing indent at L7086."""
+from pathlib import Path
+
+f = Path("src/gui_2.py")
+text = f.read_text(encoding="utf-8", errors="replace")
+
+# Find the bad line and re-indent it
+old = '    render_selectable_label(app, f\'stream_t3_{ticket_id}\', app.mma_streams[key], width=-1, multiline=True, height=0)\n'
+new = '     render_selectable_label(app, f\'stream_t3_{ticket_id}\', app.mma_streams[key], width=-1, multiline=True, height=0)\n'
+
+if old in text:
+    text = text.replace(old, new)
+    f.write_text(text, encoding="utf-8")
+    print("replaced ok")
+else:
+    print("ERROR: pattern not found")
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/fix_orphan.py b/scripts/tier2/artifacts/default_layout_install_20260629/fix_orphan.py
new file mode 100644
index 00000000..afbeb2a4
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/fix_orphan.py
@@ -0,0 +1,37 @@
+"""Fix the orphan end_child in src/gui_2.py at the tier3 section."""
+from pathlib import Path
+
+f = Path("src/gui_2.py")
+text = f.read_text(encoding="utf-8", errors="replace")
+lines = text.splitlines(keepends=True)
+
+# Find the bad section and replace
+old = '''     #NOTE(Ed): Exception(Thirdparty)
+     try:
+      if len(app.mma_streams[key]) != app._tier_stream_last_len.get(key, -1):
+       imgui.set_scroll_here_y(1.0)
+      app._tier_stream_last_len[key] = len(app.mma_streams[key])
+      imgui.end_child()
+     except (TypeError, AttributeError):
+      pass
+     imgui.end_child()'''
+new = '''     #NOTE(Ed): Exception(Thirdparty)
+     try:
+      if len(app.mma_streams[key]) != app._tier_stream_last_len.get(key, -1):
+       imgui.set_scroll_here_y(1.0)
+      app._tier_stream_last_len[key] = len(app.mma_streams[key])
+     except (TypeError, AttributeError):
+      pass
+     finally:
+      imgui.end_child()'''
+
+if old in text:
+    new_text = text.replace(old, new)
+    f.write_text(new_text, encoding="utf-8")
+    print("replaced ok")
+else:
+    print("ERROR: old block not found verbatim")
+    print("---looking for nearby text---")
+    if "tier3_" in text:
+        idx = text.find("tier3_")
+        print(text[idx:idx+800])
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/inspect_imgui_apis.py b/scripts/tier2/artifacts/default_layout_install_20260629/inspect_imgui_apis.py
new file mode 100644
index 00000000..95adbae2
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/inspect_imgui_apis.py
@@ -0,0 +1,40 @@
+"""Inspect imgui-bundle INI APIs to figure out which function applies settings properly."""
+from imgui_bundle import imgui, hello_imgui
+
+print("=== imgui-bundle hello_imgui INI APIs ===")
+for x in sorted(dir(hello_imgui)):
+    if "ini" in x.lower() or "settings" in x.lower() or "prefs" in x.lower() or "user_pref" in x.lower():
+        print(f"  hello_imgui.{x}")
+
+print()
+print("=== imgui core INI APIs ===")
+for x in sorted(dir(imgui)):
+    if "ini" in x.lower():
+        print(f"  imgui.{x}")
+
+print()
+print("=== Probe functions ===")
+try:
+    fn = imgui.load_ini_settings_from_memory
+    print(f"imgui.load_ini_settings_from_memory: {fn!r}")
+    print(f"  type: {type(fn)}")
+    if fn.__doc__:
+        print(f"  doc[:300]: {fn.__doc__[:300]}")
+except Exception as e:
+    print(f"  err: {e}")
+
+# Check if load_ini_settings_from_disk and load_ini_settings_from_memory differ in behavior
+import os, sys
+# Try to call load_ini_settings_from_memory with empty text
+print()
+print("=== Inspect hello_imgui default settings location ===")
+try:
+    folder = hello_imgui.ini_folder_location()
+    print(f"  ini_folder_location(): {folder!r}")
+except Exception as e:
+    print(f"  err: {e}")
+try:
+    settings = hello_imgui.ini_settings_location('Default')
+    print(f"  ini_settings_location('Default'): {settings!r}")
+except Exception as e:
+    print(f"  err: {e}")
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/peek.py b/scripts/tier2/artifacts/default_layout_install_20260629/peek.py
new file mode 100644
index 00000000..a8cf1daa
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/peek.py
@@ -0,0 +1,7 @@
+"""Get the original 71028dad content of the tier3_ section to compare."""
+import subprocess
+out = subprocess.run(["git", "show", "71028dad:src/gui_2.py"], cwd=".", capture_output=True, errors="ignore", text=True, encoding="utf-8")
+text = out.stdout
+# Find tier3_
+idx = text.find("tier3_")
+print(text[idx:idx+2000])
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/peek2.py b/scripts/tier2/artifacts/default_layout_install_20260629/peek2.py
new file mode 100644
index 00000000..a0e57424
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/peek2.py
@@ -0,0 +1,7 @@
+"""Show the actual file lines around 7088."""
+from pathlib import Path
+lines = Path("src/gui_2.py").read_text(encoding="utf-8", errors="replace").splitlines()
+print(f"Total lines: {len(lines)}")
+print()
+for i in range(7080, 7098):
+    print(f"  L{i+1}: {lines[i]!r}")
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/peek3.py b/scripts/tier2/artifacts/default_layout_install_20260629/peek3.py
new file mode 100644
index 00000000..44a64c54
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/peek3.py
@@ -0,0 +1,11 @@
+"""Show exact bytes at L7085-L7090."""
+from pathlib import Path
+data = Path("src/gui_2.py").read_text(encoding="utf-8", errors="replace")
+lines = data.splitlines()
+for i in range(7084, 7090):
+    line = lines[i]
+    leading = len(line) - len(line.lstrip(" "))
+    print(f"L{i+1}: leading={leading!r} rest={line.strip()!r}")
+    # Show first 10 chars as hex
+    first = line[:leading+5]
+    print(f"  first_chars={first!r}")
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/peek4.py b/scripts/tier2/artifacts/default_layout_install_20260629/peek4.py
new file mode 100644
index 00000000..99cffa52
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/peek4.py
@@ -0,0 +1,8 @@
+"""Show L7080-L7100 from current file with exact indentation."""
+from pathlib import Path
+data = Path("src/gui_2.py").read_text(encoding="utf-8", errors="replace")
+lines = data.splitlines()
+for i in range(7080, 7100):
+    line = lines[i]
+    leading = len(line) - len(line.lstrip(" "))
+    print(f"  L{i+1} [{leading} spaces]: {line.strip()[:80]}")
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/peek5.py b/scripts/tier2/artifacts/default_layout_install_20260629/peek5.py
new file mode 100644
index 00000000..8a86a651
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/peek5.py
@@ -0,0 +1,7 @@
+"""Show L7080-L7095 exact content."""
+from pathlib import Path
+lines = Path("src/gui_2.py").read_text(encoding="utf-8", errors="replace").splitlines()
+for i in range(7080, 7098):
+    line = lines[i]
+    leading = len(line) - len(line.lstrip(" "))
+    print(f"L{i+1} [{leading}]: {line}")
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/peek6.py b/scripts/tier2/artifacts/default_layout_install_20260629/peek6.py
new file mode 100644
index 00000000..de56ac1f
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/peek6.py
@@ -0,0 +1,7 @@
+"""Show full context of the indent error."""
+from pathlib import Path
+lines = Path("src/gui_2.py").read_text(encoding="utf-8", errors="replace").splitlines()
+for i in range(7050, 7100):
+    line = lines[i]
+    leading = len(line) - len(line.lstrip(" "))
+    print(f"L{i+1} [{leading}]: {line}")
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/peek7.py b/scripts/tier2/artifacts/default_layout_install_20260629/peek7.py
new file mode 100644
index 00000000..45a5e89a
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/peek7.py
@@ -0,0 +1,7 @@
+from pathlib import Path
+data = Path("src/gui_2.py").read_text(encoding="utf-8", errors="replace")
+lines = data.split("\n")
+for i in range(7080, 7100):
+    line = lines[i]
+    leading = len(line) - len(line.lstrip(" "))
+    print(f"L{i+1} [{leading}]: {line[:80]!r}")
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/peek8.py b/scripts/tier2/artifacts/default_layout_install_20260629/peek8.py
new file mode 100644
index 00000000..96a7cf63
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/peek8.py
@@ -0,0 +1,16 @@
+"""Look at the conditional structure around L3757 and L8809."""
+from pathlib import Path
+
+text = Path("src/gui_2.py").read_text(encoding="utf-8", errors="replace")
+lines = text.split("\n")
+
+# Look at the structure around L3757 (Persona Editor)
+print("=== Persona Editor area: L3574-L3762 ===")
+for i in range(3574, 3762):
+    line = lines[i-1]
+    print(f"  L{i}: {line.strip()[:80]}")
+print()
+print("=== Command Palette area: L8770-L8812 ===")
+for i in range(8770, 8812):
+    line = lines[i-1]
+    print(f"  L{i}: {line.strip()[:80]}")
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/remove_orphan.py b/scripts/tier2/artifacts/default_layout_install_20260629/remove_orphan.py
new file mode 100644
index 00000000..577e8192
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/remove_orphan.py
@@ -0,0 +1,42 @@
+"""Re-apply ONLY the orphan fix: remove the end_child in the except block.
+The original code (71028dad) had:
+  try:
+    ...
+    imgui.end_child()   <-- in try
+  except (...):
+    imgui.end_child()   <-- in except (the orphan)
+    pass
+Both fire on different paths. If try succeeds, only the first fires (closes begin).
+If try fails, only the second fires (closes begin). But find_imbalance.py
+showed 1 extra end_child at L7094. That's the except's. Removing it should fix
+the imbalance without breaking the try-success path.
+"""
+from pathlib import Path
+
+f = Path("src/gui_2.py")
+data = f.read_text(encoding="utf-8", errors="replace")
+
+# The orphan line: "    imgui.end_child()\n    pass\n if app.perf_profiling_enabled"
+# Remove the orphan end_child but keep the rest intact.
+# Use the unique surrounding context.
+old = "    imgui.end_child()\n    pass\n if app.perf_profiling_enabled"
+new = "    pass\n if app.perf_profiling_enabled"
+
+if old in data:
+    data = data.replace(old, new, 1)
+    f.write_text(data, encoding="utf-8")
+    print("orphan removed successfully")
+else:
+    print("ERROR: pattern not found")
+    # Search for the surrounding context
+    idx = data.find("pass\n if app.perf_profiling_enabled")
+    if idx == -1:
+        # Try without leading newline
+        idx = data.find("pass\n if app.perf_profiling_enabled")
+    if idx >= 0:
+        print(f"  Context: {data[max(0,idx-100):idx+100]!r}")
+    else:
+        # Find imgui.end_child lines
+        for i, line in enumerate(data.split("\n")):
+            if "imgui.end_child()" in line:
+                print(f"  L{i+1}: {line!r}")
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/remove_orphan2.py b/scripts/tier2/artifacts/default_layout_install_20260629/remove_orphan2.py
new file mode 100644
index 00000000..021f395f
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/remove_orphan2.py
@@ -0,0 +1,23 @@
+"""Remove the orphan end_child in the except block."""
+from pathlib import Path
+
+f = Path("src/gui_2.py")
+data = f.read_text(encoding="utf-8", errors="replace")
+
+# Use the specific pattern that the search returned:
+# "    except (TypeError, AttributeError):\n     imgui.end_child()\n     pass\n"
+# Remove the imgui.end_child line.
+old = """    except (TypeError, AttributeError):
+     imgui.end_child()
+     pass
+"""
+new = """    except (TypeError, AttributeError):
+     pass
+"""
+
+if old in data:
+    data = data.replace(old, new, 1)
+    f.write_text(data, encoding="utf-8")
+    print("orphan removed")
+else:
+    print("ERROR: pattern not found")
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/search_indent.py b/scripts/tier2/artifacts/default_layout_install_20260629/search_indent.py
new file mode 100644
index 00000000..e0cbf01c
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/search_indent.py
@@ -0,0 +1,9 @@
+from pathlib import Path
+data = Path("src/gui_2.py").read_text(encoding="utf-8", errors="replace")
+pattern = "    render_selectable_label(app, f'stream_t3_{ticket_id}'\n"
+count = data.count(pattern)
+print(f"pattern occurrences: {count}")
+idx = 0
+for i in range(count):
+    idx = data.find(pattern, idx if i == 0 else idx + 1)
+    print(f"  match {i}: at offset {idx}")
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/search_indent2.py b/scripts/tier2/artifacts/default_layout_install_20260629/search_indent2.py
new file mode 100644
index 00000000..6320de9f
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/search_indent2.py
@@ -0,0 +1,6 @@
+from pathlib import Path
+data = Path("src/gui_2.py").read_text(encoding="utf-8", errors="replace")
+idx = data.find("render_selectable_label")
+print(f"Match at offset {idx}")
+print("Context:")
+print(repr(data[max(0, idx-50):idx+200]))
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/search_indent3.py b/scripts/tier2/artifacts/default_layout_install_20260629/search_indent3.py
new file mode 100644
index 00000000..c24632be
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/search_indent3.py
@@ -0,0 +1,5 @@
+from pathlib import Path
+data = Path("src/gui_2.py").read_text(encoding="utf-8", errors="replace")
+idx = data.find("render_selectable_label(app, f'stream_t3")
+print(f"Found at offset {idx}")
+print(repr(data[max(0, idx-50):idx+250]))
diff --git a/scripts/tier2/artifacts/default_layout_install_20260629/window_balance.py b/scripts/tier2/artifacts/default_layout_install_20260629/window_balance.py
new file mode 100644
index 00000000..3f7c5ccd
--- /dev/null
+++ b/scripts/tier2/artifacts/default_layout_install_20260629/window_balance.py
@@ -0,0 +1,50 @@
+"""Find imgui.begin/end (window-level) and imgui.end_child (child-level) only.
+Skip tree_node (end_group) and other unrelated types.
+"""
+import re
+from pathlib import Path
+
+text = Path("src/gui_2.py").read_text(encoding="utf-8", errors="replace")
+lines = text.split("\n")
+
+# Only count imgui.begin( and imgui.end( (window-level)
+# These are the actual MainDockSpace begin/end
+# Also count imgui.begin_child / end_child
+balance = {"begin": [], "end": [], "begin_child": [], "end_child": []}
+for i, line in enumerate(lines, 1):
+    if re.search(r"\bimgui\.begin\(", line):
+        balance["begin"].append(i)
+    if re.search(r"\bimgui\.end\(", line):
+        balance["end"].append(i)
+    if re.search(r"\bimgui\.begin_child\(", line):
+        balance["begin_child"].append(i)
+    if re.search(r"\bimgui\.end_child\(", line):
+        balance["end_child"].append(i)
+
+print("=== Counts ===")
+for k, v in balance.items():
+    print(f"  {k}: {len(v)}")
+print()
+# For begin/end (window-level), check if any of them is orphaned
+# In a single line, if both begin and end appear, balance
+window_stack = []
+events = []
+for i, line in enumerate(lines, 1):
+    n_begin = len(re.findall(r"\bimgui\.begin\(", line))
+    n_end = len(re.findall(r"\bimgui\.end\(", line))
+    for j in range(n_begin):
+        events.append((i, "begin"))
+    for j in range(n_end):
+        events.append((i, "end"))
+
+for ev in events:
+    if ev[1] == "begin":
+        window_stack.append(ev)
+    else:
+        if window_stack:
+            window_stack.pop()
+        else:
+            print(f"EXTRA end: L{ev[0]}")
+
+print(f"\nLeftover begin_child lines: {len(balance['begin_child']) - len(balance['end_child'])}")
+print(f"  begins: {len(balance['begin_child'])}, ends: {len(balance['end_child'])}")