update readme and installer

AGENTS.md

@@ -1,3 +1,7 @@
 # CI-safe tests and scripts
 
 Do not assume local directories, files, tools, or generated artifacts exist in a clean CI environment. In particular, `/tmp/opencode` is an agent-environment convenience, not a CI guarantee. Tests should create temporary directories with `node:os` `tmpdir()` and `mkdtemp(join(tmpdir(), prefix))`, explicitly create required parent directories and fixtures, and clean up the files they create.
+
+# README
+
+Keep README.md to the absolutely required sections (installation, configuration, usage) with at most one short sentence of prose per section, plus code blocks.

README.md

@@ -1,36 +1,19 @@
 # stanp-opencode
 
-## Release installation
+## Installation
 
-Requires OpenCode 2.0.22, Bun 1.4.2+, Bash, curl, jq, and `sha256sum` on Linux/WSL.
+Requires OpenCode 2.0.22, Bun 1.4.2+, Bash, curl, jq and `sha256sum` on Linux/WSL.
 
 ```sh
 curl -fsSL https://git.krtss.de/StanPonomarev/stanp-opencode/raw/branch/main/install.sh | bash -s -- --plugins agents,multi-work,quota,optchat
 ```
 
-Choose any plugin subset; Multi-work requires Agents first.
-
-Quota shows ChatGPT limits for the connected OpenAI account and, when Claude Code is logged in, Claude subscription limits read from `${CLAUDE_CONFIG_DIR:-~/.claude}/.credentials.json` (read-only; Claude Code refreshes the token).
-
-Optchat implements [VictorTaelin's optchat recipe](https://gist.github.com/VictorTaelin/91837951a5ce5b38f341ec1ba1df6449). It is off by default; run `/optchat on`, `/optchat off`, or `/optchat status` in a root session. In an enabled session, each turn sees a constant-size view of the whole chat, made of one-line summaries, plus the new message. The model can open any line with the `zoom` tool and read message times with `date`. Optchat does not apply to subagent sessions. Memory is stored in `~/.local/share/opencode/optchat/<sessionID>/`. Compactions run in a child session named "optchat compactions". Optchat activates only when the `compactionModel` option is set, in the format `provider/model[#variant]` (for example `opencode/claude-haiku-5-5#xhigh`); without it (or when empty) the plugin registers nothing. A non-empty `dataDir` overrides the memory location. The installer writes both options as empty strings for you to fill in.
-
-## Local installation
-
-From a local checkout, run:
-
-```sh
-bash /path/to/stanp-opencode/install-local.sh --plugins agents,multi-work,quota
-opencode service restart
-```
-
 ## Configuration
 
-Agents registers nothing until its `agents` option is set. The installer writes every missing option with an empty value (`""`) for you to fill in; an empty value means unset, so a fresh install stays inert. Each assignment is `provider/model[#variant]`; the variant selects the model's reasoning variant, falling back to a `reasoningEffort` request setting when the model does not advertise it. Merge this into `~/.config/opencode/opencode.json`, preserving unrelated settings and plugins; update existing plugin entries instead of appending duplicates. The `deep-lo` and `deep-hi` assignments are optional as a pair; if either is omitted, both deep workers are disabled and orchestration uses `good-lo`.
+Fill in the empty values the installer writes to `~/.config/opencode/opencode.json`; empty plugins stay inactive.
 
 ```jsonc
 {
-    "$schema": "https://opencode.ai/config.json",
-    // Required at the root and in worktrees.
     "experimental": { "subagent_depth": 2 },
     "plugins": [
         {
@@ -48,6 +31,14 @@ Agents registers nothing until its `agents` option is set. The installer writes
         },
         { "package": "./plugins/stanp-opencode/multi-work" },
         { "package": "./plugins/stanp-opencode/quota" },
+        {
+            "package": "./plugins/stanp-opencode/optchat",
+            "options": { "compactionModel": "opencode/claude-haiku-5-5#xhigh", "dataDir": "" },
+        },
     ],
 }
 ```
+
+## Usage
+
+Run `/optchat on|off|status` in a root session to toggle optchat.

scripts/install.ts

@@ -42,6 +42,7 @@ const pluginSchema = z.union([z.string(), entrySchema]);
 const registrationSchema = z
     .union([z.string().transform((packageName) => ({ package: packageName })), entrySchema])
     .pipe(entrySchema);
+const experimentalSchema = z.object({ subagent_depth: z.number().optional() }).catchall(z.json());
 const configSchema = z
     .object({ plugins: z.array(pluginSchema).optional(), $schema: z.string().optional() })
     .catchall(z.json());
@@ -145,11 +146,18 @@ export async function install(source: string, config: string, selection?: string
     const first = configured.findIndex((entry) => isOwned(entry.package));
     const next = entries.filter((_entry, index) => !isOwned(configured[index]!.package));
     next.splice(first < 0 ? next.length : first, 0, ...registrations);
-    const updated = {
+    const updated: z.infer<typeof configSchema> = {
         ...current,
         $schema: current.$schema ?? "https://opencode.ai/config.json",
         plugins: next,
     };
+    // Coordinate delegates to workers from Multi-work children, so routing needs depth >= 2.
+    const experimental = experimentalSchema.safeParse(current.experimental ?? {});
+    if (selected.includes("agents") && experimental.success)
+        updated.experimental = {
+            ...experimental.data,
+            subagent_depth: Math.max(experimental.data.subagent_depth ?? 0, 2),
+        };
     const parent = join(config, "plugins");
     await mkdir(parent, { recursive: true });
     const staged = join(parent, `.stanp-opencode.new.${process.pid}`);

tests/install.test.ts

@@ -265,6 +265,30 @@ test("installer writes empty option skeletons, fills only missing keys, and is i
     expect(await contents(f.config)).toEqual(filled);
 });
 
+test("agents installs set experimental.subagent_depth to at least 2", async () => {
+    const f = await fixture();
+    await install(f.source, f.config, "quota");
+    expect((await contents(f.config)).experimental).toBeUndefined();
+    await install(f.source, f.config, "agents");
+    const fresh = await contents(f.config);
+    expect(fresh.experimental).toEqual({ subagent_depth: 2 });
+    expect(fresh).toMatchObject(unrelated);
+    for (const [depth, expected] of [
+        [1, 2],
+        [3, 3],
+    ]) {
+        await writeFile(
+            join(f.config, "opencode.json"),
+            JSON.stringify({ ...fresh, experimental: { subagent_depth: depth, other: true } }),
+        );
+        await install(f.source, f.config);
+        const result = await contents(f.config);
+        expect(result.experimental).toEqual({ subagent_depth: expected, other: true });
+        await install(f.source, f.config);
+        expect(await contents(f.config)).toEqual(result);
+    }
+});
+
 test("local installer retains executable permissions and supports direct invocation", async () => {
     const f = await fixture();
     const path = new URL("../install-local.sh", import.meta.url).pathname;