Summary

• Area 6 of umbrella gut(auto-reply): finish thinking-level and model-selection sweep — follow-up to #2335 #2336 — removes the /think slash-command directive from user-facing docs.
• RemoteClaw does not control thinking levels; CLI runtimes (Claude, Gemini, Codex, OpenCode) own that decision. Advertising /think as a RemoteClaw directive is stale upstream surface.
• Sibling PR gut(auto-reply): partial thinking-level + model-selection sweep — Areas 1+2+4 of #2336 #2463 landed Areas 1+2+4 (runtime /think parsing, helpers, and passthrough plumbing). This completes the docs half.

Changes

• docs/tools/slash-commands.md — remove /think from the directives list (L17), delete the /think <off|minimal|low|medium|high|xhigh> command entry (L114), and drop /think: high from the colon-separator example (L133).
• docs/concepts/context.md:139 — remove /think from the directives list.
• docs/web/tui.md:94 — delete the /think <off|...> TUI entry.
• docs/channels/group-messages.md — drop or /think high at L18 and /think high at L70 from the session-level-directives examples; /verbose on remains as the primary example in both spots.

Verification

• git grep "/think\b" docs/ → 0 hits (matches the parent gut(auto-reply): finish thinking-level and model-selection sweep — follow-up to #2335 #2336 AC).
• cd docs && npm run build → 296 pages built, no errors.
• pnpm format:docs:check → clean.
• pnpm lint:docs → no errors on the 4 edited files. Pre-existing lint errors on unrelated files (docs/start/*.mdx, docs/node_modules/**) are identical on origin/main.
• Fresh-context validate + polish subprocesses both returned CLEAN.

Out of scope for Area 6 (tracked as informational)

Found during rescan, explicitly outside the 4-file scope defined by Area 6. Flag for future #2336 waves if not already covered elsewhere:

• docs/help/faq.md:2354 — set /thinking off for that agent (alias of /think).
• docs/help/faq.md:2901, docs/concepts/messages.md:145, docs/start/hubs.md:115 — links to /tools/thinking; the target page was gutted in an earlier wave (pre-existing broken links, not introduced here).
• docs/web/tui.md:40 status-line string model + think/fast/... — UI indicator shorthand, not a slash command.
• src/agents/agent-helpers/errors.ts — error message still references /think; belongs to Areas 1/2/4 (src cleanup).

AC interpretation note

Issue AC says git grep "/think" docs/ returns zero hits. Taken literally (substring match), that would also flag model/thinking compound phrases and /thinking off alias references — none of which are the /think slash command. The parent umbrella #2336 AC uses /think\b (word boundary) to scope precisely to the directive. This PR matches /think\b behavior and documents the remaining substring matches as out-of-scope.

Closes #2466.

Test plan

• git grep "/think\b" docs/ returns zero hits
• cd docs && npm run build succeeds (296 pages)
• pnpm format:docs:check clean
• pnpm lint:docs shows no new errors on edited files
• Page-level links to /tools/slash-commands, /web/tui, /concepts/context, /channels/group-messages survive (no #think anchors existed)

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