feat: remove chat chain mode (#26980)

Removes OpenAI Responses "chain mode" from chatd. Closes CODAGT-445.

- Deletes `chatopenai/responses.go` (chain detection, activation, prompt filtering, response ID extraction) and its tests.
- Deletes the `ChainBroken` classification in `chaterror` and the chatloop retry bookkeeping that disabled chain mode mid-generation.
- Drops the `chain_broken` label from the `coderd_chatd_stream_retries_total` metric.
- Stops reading and writing `chat_messages.provider_response_id`
- Deletes the dead `ClearChatMessageProviderResponseIDsByChatID` query. Dropping the column is a follow-up migration.
- Deletes three chatloop hooks no caller sets (`ReloadMessages`, `DisableChainMode`, `PrepareMessages`), the dead `const AgentChatContextSentinelPath`, and stale chain-mode comments.

🤖 Generated by Coder Agents on behalf of @johnstcn.
This commit is contained in:
Cian Johnston
2026-07-06 11:57:12 +01:00
committed by GitHub
parent c0e2811e01
commit b21e0717d5
37 changed files with 308 additions and 2791 deletions
-8
View File
@@ -305,14 +305,6 @@ func (m queryMetricsStore) CleanupDeletedMCPServerIDsFromChats(ctx context.Conte
return r0
}
func (m queryMetricsStore) ClearChatMessageProviderResponseIDsByChatID(ctx context.Context, chatID uuid.UUID) error {
start := time.Now()
r0 := m.s.ClearChatMessageProviderResponseIDsByChatID(ctx, chatID)
m.queryLatencies.WithLabelValues("ClearChatMessageProviderResponseIDsByChatID").Observe(time.Since(start).Seconds())
m.queryCounts.WithLabelValues(httpmw.ExtractHTTPRoute(ctx), httpmw.ExtractHTTPMethod(ctx), "ClearChatMessageProviderResponseIDsByChatID").Inc()
return r0
}
func (m queryMetricsStore) CountAIBridgeSessions(ctx context.Context, arg database.CountAIBridgeSessionsParams) (int64, error) {
start := time.Now()
r0, r1 := m.s.CountAIBridgeSessions(ctx, arg)