`isContextLimitKey` had a fallback heuristic that matched any key starting with `"max"` containing `"context"`, causing false positives on keys like `"max_context_version"`. A provider returning such metadata would have the value parsed as a context limit.
Replace substring matching on the separator-stripped key with word-level matching. A new `metadataKeyWords` function tokenizes keys by splitting on separators and camelCase boundaries, then the fallback requires
`"context"` paired with a limit-related word (`"limit"`, `"window"` + qualifier, `"length"` + qualifier, or `"tokens"` + qualifier). Known exact forms like `"context_window"` remain in the fast-path switch.
Closes https://github.com/coder/coder/issues/23332
- Moves `coderd/chatd/`, `coderd/gitsync/`, `enterprise/coderd/chatd/`
under `x/` parent directories to signal instability
- Adds `Experimental:` glue code comments in `coderd/coderd.go`
> 🤖 This PR was created with the help of Coder Agents, and was
reviewed by my human. 🧑💻
dylanhuff-at-coder