[danielehrhardt]

Long chats get slow and expensive, and today the only way out is typing /compact (only mentioned in the "too long" error). This makes chat memory visible and compressing a one-click thing.

What changes

• Context meter in the composer toolbar (also in Easy mode): a ring that fills with the chat's Claude session. Click for a popover with tokens of the window, the share, a tick at the auto-compress point and Compress now.
• "This chat is getting long" bar above the composer at 75% of the auto threshold (amber, red near it): Compress now, or hide until it grows another 20%.
• /compress works as an alias of /compact (runner rewrites it, the slash menu offers it, extra text is passed on as focus).
• Compressed divider in the thread instead of a plain notice: "Chat compressed · 422k → 9k (−98%)", or "Compressed automatically". The duplicate /compact command card is hidden.
• Too-long turn end now has a Compress button next to New chat.
• Auto-compress setting (Settings → AI & Claude → Limits → Compress long chats): 30–80% (default 50%), "When nearly full" (Claude Code's own threshold) or "Never by itself". Passed as CLAUDE_AUTOCOMPACT_PCT_OVERRIDE / DISABLE_AUTO_COMPACT; Claude Code uses min(window × pct, its own threshold). Open to settings_update and the phone scope.

How

• StreamAccumulator tracks contextTokens (input + cache read/write + output of the latest top-level message, the summary size after compact_boundary, cleared on /clear) and contextWindow (from modelUsage of the main model).
• Migration 100: conversations.context_tokens/context_window, exposed as Conversation.context, written at the end of each stretch and live during a run (at most every 30 s and +2k tokens, right away after a compaction). Runner chats carry it in runner_state.

Checks

• pnpm -r typecheck clean.
• New tests: accumulator context/window (subagent models ignored), and a run test: BIG_CONTEXT turn stores 421.6k/1M with the env set to 50, then /compress keep the open tasks reaches Claude Code as /compact keep the open tasks and the context drops to the summary.
• slash-commands, mcp, mobile, runner, replica, conversations, remote-mirror, backup, settings-audit suites pass (pinned conversation shape updated with context).
• Real Claude Code 2.1.308 in -p mode: CLAUDE_AUTOCOMPACT_PCT_OVERRIDE=1 triggers status: compacting on the next turn.

Screenshots (sandbox core with the fake Claude)

Saved locally in ~/.godmode/agents/godmode/workspace/godmode-bot/chat-compress/: s-bar.png, s-popover.png, s-after.png, s-after-dark.png, s-settings.png.