[StarsailsClover]

Problem

Codex 0.160 selects remote compaction v2 whenever the provider name is "OpenAI". CC Switch's local-proxy route uses that name for a third-party provider, so the gateway receives a compaction_trigger request it cannot answer. collect_compaction_output then fails fatally with remote compaction v2 expected exactly one compaction output item, got 0 from N output items, and the session cannot continue.

Reproduced deterministically in a temporary CODEX_HOME with model_auto_compact_token_limit=2000: the second turn fails with exactly that error; resuming after changing [model_providers.SailsAPI].name to "SailsAPI" compacted locally and completed successfully.

Change

• New pinned policy list: exact paths that stay protected even inside a managed subtree.
• Traversal descends into managed tables only where a pinned descendant exists; a pinned leaf never resurrects a missing parent table.
• Removing a pinned path forces a clobber classification, so watch repairs it.

Verified

• 41 tests passing; clippy -D warnings and fmt --check clean.
• Regression tests: projection of a pinned leaf under model_providers, merge restores it over name = "OpenAI", missing parents are not recreated, and pinned removal classifies as a clobber.
• Real-machine end-to-end: with the updated config, the same two-turn compaction scenario prints context compacted and exits 0; the previously failed session resumes.