fix: resolve #3124 #3125 #3127 session tools, cache priming, and compaction loop

- #3124: Session tools now merge SDK and file-backed sessions for SQLite backend
- #3125: Cache priming fixed for OpenCode >=1.3.14 empty workspace
- #3127: Activity-based progress detection prevents infinite compaction on Kimi/Minimax

All 29 new tests pass, 4885 total tests passing.

src/tools/delegate-task/sync-session-poller.ts

@@ -5,6 +5,7 @@ import { log } from "../../shared/logger"
 import { normalizeSDKResponse } from "../../shared"
 
 const NON_TERMINAL_FINISH_REASONS = new Set(["tool-calls", "unknown"])
+const PENDING_TOOL_PART_TYPES = new Set(["tool", "tool_use", "tool-call"])
 
 function wait(milliseconds: number): Promise<void> {
   const sharedBuffer = new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT)
@@ -35,6 +36,7 @@ export function isSessionComplete(messages: SessionMessage[]): boolean {
 
   if (!lastAssistant?.info?.finish) return false
   if (NON_TERMINAL_FINISH_REASONS.has(lastAssistant.info.finish)) return false
+  if (lastAssistant.parts?.some((part) => part.type && PENDING_TOOL_PART_TYPES.has(part.type))) return false
   if (!lastUser?.info?.id || !lastAssistant?.info?.id) return false
   return lastUser.info.id < lastAssistant.info.id
 }