Prevent gateway startup failures when plugins.entries contains stale or removed plugin ids by downgrading unknown entry keys from validation errors to warnings.
Made-with: Cursor
(cherry picked from commit 34ef28cf63564159f3144cfb3b38756b468af4f0)
Land #25538 by @chilu18 to keep legacy google-antigravity-auth config entries non-fatal after removal (see #25862).
Co-authored-by: chilu18 <chilu.machona@icloud.com>
The hand-written config validator rejects `channels.modelByChannel` as
"unknown channel id: modelByChannel" even though the Zod schema, TypeScript
types, runtime code, and CLI docs all treat it as valid. The `defaults`
meta-key was already whitelisted but `modelByChannel` was missed when
the feature was added in 2026.2.21.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The initial fix using snapshot.parsed broke configs with $include directives.
This commit adds a new 'resolved' field to ConfigFileSnapshot that contains
the config after $include and ${ENV} substitution but BEFORE runtime defaults
are applied. This is now used by config set/unset to avoid:
1. Breaking configs with $include directives
2. Leaking runtime defaults into the written config file
Also removes applyModelDefaults from writeConfigFile since runtime defaults
should only be applied when loading, not when writing.
