perf(shared): optimize hot-path utilities across plugin

- task-list: replace O(n³) blocker resolution with Map lookup (C4)
- logger: buffer log entries and flush periodically to reduce sync I/O (C5)
- plugin-interface: create chatParamsHandler once at init (H3)
- pattern-matcher: cache compiled RegExp for wildcard matchers (H6)
- file-reference-resolver: use replaceAll instead of split/join (M9)
- connected-providers-cache: add in-memory cache for read operations (L4)

src/tools/task/task-list.ts

@@ -45,6 +45,8 @@ Returns summary format: id, subject, status, owner, blockedBy (not full descript
         }
       }
 
+      const taskMap = new Map(allTasks.map((t) => [t.id, t]))
+
       // Filter out completed and deleted tasks
       const activeTasks = allTasks.filter(
         (task) => task.status !== "completed" && task.status !== "deleted"
@@ -54,7 +56,7 @@ Returns summary format: id, subject, status, owner, blockedBy (not full descript
       const summaries: TaskSummary[] = activeTasks.map((task) => {
         // Filter blockedBy to only include unresolved (non-completed) blockers
         const unresolvedBlockers = task.blockedBy.filter((blockerId) => {
-          const blockerTask = allTasks.find((t) => t.id === blockerId)
+          const blockerTask = taskMap.get(blockerId)
           // Include if blocker doesn't exist (missing) or if it's not completed
           return !blockerTask || blockerTask.status !== "completed"
         })