feat: implement SDK/HTTP pruning for deduplication and tool-output truncation on SQLite

- executeDeduplication: now async, reads messages from SDK on SQLite via
  client.session.messages() instead of JSON file reads
- truncateToolOutputsByCallId: now async, uses truncateToolResultAsync()
  HTTP PATCH on SQLite instead of file-based truncateToolResult()
- deduplication-recovery: passes client through to both functions
- recovery-hook: passes ctx.client to attemptDeduplicationRecovery

Removes the last intentional feature gap on SQLite backend — dynamic
context pruning (dedup + tool-output truncation) now works on both
JSON and SQLite storage backends.

src/hooks/anthropic-context-window-limit-recovery/recovery-hook.ts

@@ -64,7 +64,7 @@ export function createAnthropicContextWindowLimitRecoveryHook(
         autoCompactState.errorDataBySession.set(sessionID, parsed)
 
         if (autoCompactState.compactionInProgress.has(sessionID)) {
-          await attemptDeduplicationRecovery(sessionID, parsed, experimental)
+          await attemptDeduplicationRecovery(sessionID, parsed, experimental, ctx.client)
           return
         }