Revert "fix: suppress false incomplete response warnings"

[catrielmuller]

Reverts #10800

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

This is a clean mechanical revert of #10800. The diff is consistent with the intent: all code, tests, and changeset files added by the original PR are removed, and the reverted shared files (packages/opencode/src/session/processor.ts, packages/opencode/src/session/prompt.ts) are back to their pre-#10800 state with the appropriate kilocode_change markers removed.

A few behavioral consequences of the revert worth noting (not blocking):

• Snapshot false-positive warnings may reappear: terminal() in session-outcome.ts no longer skips snapshot-only assistant turns, so a snapshot initialization turn appearing as the last message will trigger an "unexpected" outcome banner again.
• Oversized payload after pruning: packages/opencode/src/session/prompt.ts now only logs a warning when nextSize > REQUEST_PRUNE_BYTES instead of aborting with an error. Oversized payloads will be sent to the provider and may fail at the API level.
• Empty finish: "other" responses: The guardEmptyResponse retry logic is gone. Empty provider responses will be treated as successful completions.

These are the deliberate regressions being accepted by reverting #10800.

snapshotProgress and SNAPSHOT_PROGRESS_TEXT remain in session-utils.ts and are still used by AssistantMessage.tsx for part labeling — no dead code introduced.

Files Reviewed (9 files)

• .changeset/calm-snapshot-warnings.md - deleted (correct)
• .changeset/tidy-responses-finish.md - deleted (correct)
• packages/kilo-vscode/tests/unit/session-outcome.test.ts - snapshot-related tests removed
• packages/kilo-vscode/webview-ui/src/components/shared/TurnOutcome.tsx - parts prop removed
• packages/kilo-vscode/webview-ui/src/context/session-outcome.ts - simplified terminal() function
• packages/kilo-vscode/webview-ui/src/context/session-utils.ts - snapshotOnlyAssistant and tokenCount removed
• packages/opencode/src/kilocode/session/processor.ts - emptyResponseError, guardEmptyResponse, parse, EMPTY_RESPONSE_MESSAGE removed
• packages/opencode/src/kilocode/session/prompt.ts - payloadOverflowError, rejectPayloadOverflow, PAYLOAD_OVERFLOW_MESSAGE removed
• packages/opencode/src/kilocode/worktree-family.ts - comment wording tweak only
• packages/opencode/src/session/processor.ts - parse reverted, guardEmptyResponse call removed
• packages/opencode/src/session/prompt.ts - rejectPayloadOverflow call replaced with log.warn
• packages/opencode/test/kilocode/session/processor-effect.test.ts - deleted
• packages/opencode/test/kilocode/session/prompt.test.ts - deleted

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_{Reviewed by claude-4.6-sonnet-20260217 · 461,842 tokens}

_{Review guidance: REVIEW.md from base branch main}