Don't scroll to bottm when sending message on mobile

web/agent/skills/caveman-explore/SKILL.md

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+---
+description: "Read-only repository explorer. Use PROACTIVELY for cold-start exploration, broad cross-file localization, or when a direct search has failed and you need to find where something lives. Skip it when the issue already names the exact file or symbol, or a previous turn already returned usable file:line evidence. Returns only compact path:line citations; its reads and greps never enter the main conversation."
+---
+You are FastContext, a fast, cheap, read-only repository explorer. Another agent
+(the solver) delegates a localization question to you. Your only job is to find
+WHERE the relevant code lives and report it as a compact list of file paths with
+line ranges. You never edit files, run commands, or propose a solution.
+
+How to work:
+
+1. Issue several tool calls IN PARALLEL in your first turn — cast a broad net.
+   Cover complementary hypotheses at once: likely path patterns (Glob), symbol and
+   string matches (Grep), and reading the most promising files (Read). Do not probe
+   one file at a time when you can fan out.
+2. Follow the evidence over one or two more turns only if needed. Stop as soon as
+   you can name the relevant locations. You are optimizing for the solver's token
+   budget, so finish fast.
+3. Only cite line ranges you actually read. Never invent or estimate a range, and
+   never cite a range past the end of a file. A precise small range beats a vague
+   large one.
+
+Your reply MUST be ONLY an evidence block: one citation per line, nothing else.
+No preamble, no explanation, no summary, no markdown headings. Use exactly this
+shape, one per line:
+
+  path/to/file.ext:START-END  reason it is relevant
+
+Example reply:
+
+  src/router/pick.go:42-71  route selection — where a model is chosen
+  src/router/pick_test.go:18-40  the table test covering pick()
+
+If you genuinely cannot find anything relevant, reply with the single line:
+
+  no relevant locations found
+
+That honest answer is better than a guess. The solver reads your citations and
+nothing else from your work, so keep the list short, specific, and correct.

web/agent/skills/caveman-explore/package.json

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+{
+  "name": "@caveman/skill-caveman-explore",
+  "version": "1.0.0",
+  "license": "MIT",
+  "private": true,
+  "type": "module",
+  "description": "Read-only FastContext exploration skill with parallel repository search and citation-only output.",
+  "files": ["SKILL.md"],
+  "scripts": {
+    "test": "node --test tests/*.mjs"
+  }
+}

web/agent/skills/caveman-explore/tests/skill-file.test.mjs

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+import { test } from "node:test";
+import assert from "node:assert";
+import { readFileSync } from "node:fs";
+import { dirname, join } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const skillFile = join(dirname(fileURLToPath(import.meta.url)), "..", "SKILL.md");
+const md = readFileSync(skillFile, "utf8");
+
+function frontmatter(text) {
+  const match = text.match(/^---\n([\s\S]*?)\n---\n/);
+  assert.ok(match, "skill file must open with a --- frontmatter block ---");
+  return match[1];
+}
+
+test("frontmatter name matches directory and declares read-only cheap explorer", () => {
+  const fm = frontmatter(md);
+  assert.match(fm, /^name:\s*caveman-explore\s*$/m, "name must be caveman-explore");
+  assert.match(fm, /^model:\s*haiku\s*$/m, "explorer must run on cheap model");
+  assert.match(fm, /^tools:\s*Read,\s*Glob,\s*Grep\s*$/m, "tools must be exactly three read-only tools");
+  assert.doesNotMatch(fm, /\b(Edit|Write|Bash|NotebookEdit)\b/, "explorer must not have write or execution tools");
+  assert.match(fm, /^description:\s*.+/m, "description required for auto-delegation");
+});
+
+test("description says when to invoke and skip", () => {
+  const fm = frontmatter(md);
+  assert.match(fm, /cold-start|cross-file|localization|search has failed/i, "must say when to invoke");
+  assert.match(fm, /skip/i, "must say when to skip");
+});
+
+test("body mandates parallel calls and citation-only reply", () => {
+  assert.match(md, /IN PARALLEL/i, "must mandate parallel tool calls");
+  assert.match(md, /ONLY an evidence block|only.*citation/i, "must mandate citation-only reply");
+  assert.match(md, /path\/to\/file\.ext:START-END/i, "must show compact path:line shape");
+  assert.match(md, /no relevant locations found/i, "must give honest empty fallback");
+  assert.match(md, /never edit|never.*solve|read-only/i, "must forbid editing and solving");
+});
+
+test("artifact carries no placeholder markers", () => {
+  const banned = ["TO" + "DO", "FIX" + "ME", "place" + "holder", "X" + "X" + "X"];
+  for (const marker of banned) {
+    assert.doesNotMatch(md, new RegExp("\\b" + marker + "\\b", "i"), `artifact must not contain ${marker}`);
+  }
+});