refactor: rename anthropic-auto-compact to anthropic-context-window-limit-recovery

The old name 'auto-compact' was misleading - the hook does much more than
just compaction. It's a full recovery pipeline for context window limit
errors including:
- DCP (Dynamic Context Pruning)
- Aggressive/single truncation
- Summarize with retry
- Emergency message revert

The new name accurately describes its purpose: recovering from Anthropic
context window limit exceeded errors.

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assets/oh-my-opencode.schema.json

@@ -50,7 +50,7 @@
           "directory-readme-injector",
           "empty-task-response-detector",
           "think-mode",
-          "anthropic-auto-compact",
+          "anthropic-context-window-limit-recovery",
           "rules-injector",
           "background-notification",
           "auto-update-checker",