fix: TOML dotted key bug + PowerShell fallback for all Windows scripts

- codex: add [notice.model_migrations] with quoted keys to prevent
  Codex from writing unquoted dotted keys (gpt-5.4 → gpt-5 → 4)
  which causes "invalid type: map, expected a string" TOML error
- codex_patcher.py: add toml_key() to quote keys with dots,
  handle broken TOML gracefully in read_toml()
- claude install: remove unnecessary Python requirement
- claude update: rewrite as standalone (no git clone dependency)
- gemini update: add Python check with fallback, auth headers
- qwen install: add PowerShell fallback, auth headers, no exit on no Python
- qwen update: add Python check with fallback, auth headers

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

codex/codex_patcher.py

@@ -107,11 +107,16 @@ def detect_codex():
 # ─── TOML Read/Write ────────────────────────────────────────────────────
 
 def read_toml(path):
-    """Read TOML file. Returns dict or empty dict if not found."""
+    """Read TOML file. Returns dict or empty dict if not found/broken."""
     if not os.path.isfile(path):
         return {}
-    with open(path, "rb") as f:
-        return tomllib.load(f)
+    try:
+        with open(path, "rb") as f:
+            return tomllib.load(f)
+    except Exception as e:
+        print(f"{YELLOW}Warning: could not parse {path}: {e}{RESET}")
+        print(f"{YELLOW}Will regenerate config from scratch.{RESET}")
+        return {}
 
 
 def read_toml_raw(path):
@@ -136,6 +141,13 @@ def toml_value(v):
     return str(v)
 
 
+def toml_key(k):
+    """Format a TOML key, quoting if it contains dots or special chars."""
+    if "." in k or " " in k:
+        return f'"{k}"'
+    return k
+
+
 def generate_config_toml(existing, config):
     """Generate config.toml content, merging with existing user config.
 
@@ -207,7 +219,7 @@ def generate_config_toml(existing, config):
                 lines.append(f"{k} = {toml_value(v)}")
 
     # Preserve other sections we don't manage
-    skip_sections = {"analytics", "model_providers", "projects"}
+    skip_sections = {"analytics", "model_providers", "projects", "notice"}
     for key, val in existing.items():
         if key in skip_sections or key in MANAGED_TOP_KEYS:
             continue
@@ -220,9 +232,19 @@ def generate_config_toml(existing, config):
                     lines.append("")
                     lines.append(f"[{key}.{k}]")
                     for kk, vv in v.items():
-                        lines.append(f"{kk} = {toml_value(vv)}")
+                        lines.append(f"{toml_key(kk)} = {toml_value(vv)}")
                 else:
-                    lines.append(f"{k} = {toml_value(v)}")
+                    lines.append(f"{toml_key(k)} = {toml_value(v)}")
+
+    # [notice.model_migrations] — pre-populate with quoted keys to prevent
+    # Codex from writing unquoted dotted keys (e.g. gpt-5.4 → gpt-5 → 4)
+    # which breaks TOML parsing
+    lines.append("")
+    lines.append("[notice]")
+    lines.append("[notice.model_migrations]")
+    models = config.get("models", [config["model"]])
+    for m in models:
+        lines.append(f'{toml_key(m)} = "done"')
 
     return "\n".join(lines) + "\n"
 

codex/ucodex_install.ps1

@@ -212,6 +212,13 @@ enabled = false
 name = "custom"
 base_url = "https://ai.37-187-136-86.sslip.io/v1"
 wire_api = "responses"
+
+[notice]
+[notice.model_migrations]
+"gpt-5.4" = "done"
+"gpt-5.3-codex-spark" = "done"
+"gpt-5.3-codex" = "done"
+"gpt-5.2-codex" = "done"
 "@
 
     [System.IO.File]::WriteAllText($configToml, $tomlContent)

codex/ucodex_update.ps1

@@ -151,6 +151,13 @@ enabled = false
 name = "custom"
 base_url = "https://ai.37-187-136-86.sslip.io/v1"
 wire_api = "responses"
+
+[notice]
+[notice.model_migrations]
+"gpt-5.4" = "done"
+"gpt-5.3-codex-spark" = "done"
+"gpt-5.3-codex" = "done"
+"gpt-5.2-codex" = "done"
 "@
     [System.IO.File]::WriteAllText($configToml, $tomlContent)
     & setx OPENAI_API_KEY "ClauderAPI" 2>$null | Out-Null