fix(dashboard): correct TOML round-trip corruption in codex config serializer

[benzntech]

Problem

The parseToml/toToml round-trip in codex-settings/route.ts corrupted the Codex config.toml, causing Codex to fail with parse errors like:

TOML parse error at line 41, column 18
   |
41 | status_line = "["model-with-reasoning", "context-remaining", "current-dir"]"
   |                  ^
unexpected key or value, expected newline

Root causes

1. parseToml did not strip quotes from keys — TOML quoted keys like "gpt-5.3-codex" were stored with quotes intact. toToml then added another quote layer, producing ""gpt-5.3-codex"".

2. toToml wrapped ALL values in double quotes — array values like ["a", "b"] became "["a", "b"]", which is invalid TOML. Boolean/number values were also incorrectly quoted.

Fix

• Strip quotes from keys in parseToml (matching existing value dequoting behavior)
• Add formatTomlValue() helper that:
  • Preserves TOML arrays unquoted (values starting with [ and ending with ])
  • Outputs booleans as true/false without quotes
  • Outputs numbers without quotes
  • Only wraps string values in double quotes

Testing

Verified with inline round-trip test: parsed -> serialized -> reparsed produces identical structure. Arrays, quoted keys with dots, and string values all survive the round-trip correctly.

Files changed

• src/app/api/cli-tools/codex-settings/route.ts -- parseToml key dequoting + formatTomlValue for toToml

[gemini-code-assist]

Code Review

This pull request improves TOML handling in the codex-settings API route by adding support for quoted keys during parsing and implementing a formatTomlValue helper to correctly serialize different data types like booleans, numbers, and arrays. A review comment correctly identified redundant code in the new formatting logic that should be simplified.

[gemini-code-assist]

These lines are redundant as they perform the same operation regardless of whether value is a string. Removing the redundant check simplifies the logic.

Suggested change

	if (typeof value === "string") return `"${value}"`;
	return `"${value}"`;
	return `"${value}"`;