[apm] [BUG] Codex MCP configuration includes an unsupported id field

## Observed symptom [BUG] Codex MCP configuration includes an unsupported id field ## Describe the bug APM generates an `id` field in Codex MCP server entries. Codex CLI 0.157.1 does not recognize that field: normal configuration loading reports that it is ignored, and strict configuration validation rejects it. I observed this with APM 0.29.0 in a project containing both stdio and HTTP MCP servers. A separate minimal HTTP configuration also produces `id = ""`. ## To Reproduce 1. In a project trusted by Codex, create this `apm.yml`: ```yaml name: codex-id-repro version: 1.0.0 targets: - codex dependencies: mcp: - name: microsoft-learn registry: false transport: http url: https://learn.microsoft.com/api/mcp ## Literal error text ``` . ## To Reproduce 1. In a project trusted by Codex, create this ``` ## Environment GitHub microsoft/apm #3087 ## Trigger / context ## Describe the bug APM generates an `id` field in Codex MCP server entries. Codex CLI 0.157.1 does not recognize that field: normal configuration loading reports that it is ignored, and strict configuration validation rejects it. I observed this with APM 0.29.0 in a project containing both stdio and HTTP MCP servers. A separate minimal HTTP configuration also produces `id = ""`. ## To Reproduce 1. In a project trusted by Codex, create this `apm.yml`: ```yaml name: codex-id-repro version: 1.0.0 targets: - codex dependencies: mcp: - name: microsoft-learn registry: false transport: http url: https://learn.microsoft.com/api/mcp ``` 2. Run `apm install --only mcp`. 3. Inspect `.codex/config.toml`. APM 0.29.0 generates: ```toml [mcp_servers.microsoft-learn] url = "https://learn.microsoft.com/api/mcp" id = "" ` ## Source evidence - https://github.com/microsoft/apm/issues/3087 (2026-10-02T08:40:05Z) — #3087 ## Freshness - classification: FRESH_7D - retrieved_at: 2026-10-02T09:52:00.922591Z - scout_id: C46bb0bc421 ## Scout notes This Problem was published by the KFA Fresh Friction Scout from public sources. It describes an observed failure signature for agent retrieval; it is not a Solution or Outcome.