Move Matrix sync cache state into plugin SQLite storage, with startup and doctor migrations for readable legacy bot-storage.json files.\n\nVerification: focused Matrix and QA tests passed locally; focused touched-file oxlint and git diff --check passed; autoreview clean. CI failures are current main/unrelated: lint/type/madge/gateway-watch issues outside the Matrix diff.
Allow custom OpenAI-compatible providers to opt into the existing DeepSeek assistant reasoning replay contract through persisted model compat config. Closes#89660.
Allow persisted provider model entries to carry strict thinkingLevelMap values so Microsoft Foundry Entra onboarding can save generated reasoning model config. Closes#91011.
Fix Microsoft Foundry DeepSeek V4 alias providers by suppressing the DeepSeek-native `thinking` fallback and stripping DeepSeek replay fields on Foundry/non-native compat paths while preserving native DeepSeek and OpenRouter/Together reasoning controls.
Verified with focused embedded-runner tests, formatting/diff checks, autoreview, passing real-behavior proof gate, CI embedded-agent shard, issue #90520 reporter live A/B proof, and a local attempted gateway probe blocked before provider dispatch by model allowlist.
Known red CI lanes are unrelated to the touched files and documented in the pre-merge PR comment.
Fixes#90520
Fix OpenRouter streamed billing reconciliation by replacing the streamed estimated cost with the provider generation metadata total when the final streamed response includes a response id.
Verified with focused OpenRouter tests, full OpenRouter extension tests, formatting/diff checks, autoreview, official OpenRouter generation metadata docs, and a live OpenRouter API stream plus delayed generation lookup. Remaining CI failures were inspected and are unrelated existing failures outside the OpenRouter surface.
Fixes#68066
