Fix issues being auto-closed despite human activity

The sweep script was closing issues based solely on when a lifecycle label
was applied, ignoring any human comments posted after the label. This caused
active issues (like #11792) to be closed even when users responded to the
stale warning.

Three changes:

1. Teach the triage bot about `stale` and `autoclose` labels so it removes
   them when a human comments on the issue.

2. Add a safety net in `closeExpired()` that checks for non-bot comments
   posted after the lifecycle label was applied — if any exist, skip closing.

3. Extend the 10-upvote protection (which previously only applied to
   enhancements) to all issue types, in both `markStale()` and
   `closeExpired()`.

Fixes #16497

## Test plan

Trace through scenarios manually:
- Issue with stale label + human comment after → triage removes label;
  sweep skips even if triage hasn't run yet (safety net)
- Issue with stale label + no human comment → closes as before
- Issue with 10+ upvotes of any type → never marked stale or closed

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -1,23 +1,5 @@
 # Changelog
 
-## 2.1.45
-
-- Added support for Claude Sonnet 4.6
-- Added support for reading `enabledPlugins` and `extraKnownMarketplaces` from `--add-dir` directories
-- Added `spinnerTipsOverride` setting to customize spinner tips — configure `tips` with an array of custom tip strings, and optionally set `excludeDefault: true` to show only your custom tips instead of the built-in ones
-- Added `SDKRateLimitInfo` and `SDKRateLimitEvent` types to the SDK, enabling consumers to receive rate limit status updates including utilization, reset times, and overage information
-- Fixed Agent Teams teammates failing on Bedrock, Vertex, and Foundry by propagating API provider environment variables to tmux-spawned processes (anthropics/claude-code#23561)
-- Fixed sandbox "operation not permitted" errors when writing temporary files on macOS by using the correct per-user temp directory (anthropics/claude-code#21654)
-- Fixed Task tool (backgrounded agents) crashing with a `ReferenceError` on completion (anthropics/claude-code#22087)
-- Fixed autocomplete suggestions not being accepted on Enter when images are pasted in the input
-- Fixed skills invoked by subagents incorrectly appearing in main session context after compaction
-- Fixed excessive `.claude.json.backup` files accumulating on every startup
-- Fixed plugin-provided commands, agents, and hooks not being available immediately after installation without requiring a restart
-- Improved startup performance by removing eager loading of session history for stats caching
-- Improved memory usage for shell commands that produce large output — RSS no longer grows unboundedly with command output size
-- Improved collapsed read/search groups to show the current file or search pattern being processed beneath the summary line while active
-- [VSCode] Improved permission destination choice (project/user/session) to persist across sessions
-
 ## 2.1.44
 
 - Fixed ENAMETOOLONG errors for deeply-nested directory paths