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+# Explicit `server` Option Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Let users configure the llama-server endpoint explicitly via the plugin's `server` option in `tui.json`, independent of provider naming.
+
+**Architecture:** OpenCode passes plugin options (`[name, options]` tuples in `tui.json`) as the second argument to the TUI plugin function. A new pure function `resolveServerUrls(options, config)` in `src/stats.ts` implements the resolution order (explicit `server` → name-based detection → localhost fallback); `tui.tsx` calls it at startup. Helpers `stripBaseUrlPath` and `extractProviderUrls` move from `tui.tsx` into `src/stats.ts` so the resolution logic is pure and testable.
+
+**Tech Stack:** TypeScript, Solid JSX (TUI), `node:test` + `tsx` for tests (existing pattern in `test-backoff.ts`).
+
+**Spec:** `docs/superpowers/specs/2026-08-21-explicit-server-option-design.md`
+
+---
+
+### Task 1: `resolveServerUrls` with moved helpers in `src/stats.ts`
+
+**Files:**
+- Modify: `src/stats.ts`
+- Test: `test-backoff.ts`
+
+- [ ] **Step 1: Write the failing tests**
+
+Append to `test-backoff.ts` (keep existing imports/tests intact; change the import line):
+
+```ts
+import { backoffDelayMs, resolveServerUrls } from "./src/stats.ts"
+```
+
+Add at the end of the file:
+
+```ts
+const llamaConfig = {
+  provider: {
+    llama: { options: { baseURL: "http://localhost:9090/v1" } },
+  },
+}
+
+test("explicit server wins over provider detection", () => {
+  assert.deepEqual(
+    resolveServerUrls({ server: "http://headless.local:8080" }, llamaConfig),
+    ["http://headless.local:8080"],
+  )
+})
+
+test("explicit server strips /v1 path", () => {
+  assert.deepEqual(
+    resolveServerUrls({ server: "http://headless.local:8080/v1" }, {}),
+    ["http://headless.local:8080"],
+  )
+})
+
+test("non-string server falls back to detection", () => {
+  assert.deepEqual(resolveServerUrls({ server: 42 }, llamaConfig), [
+    "http://localhost:9090",
+  ])
+})
+
+test("empty server falls back to detection", () => {
+  assert.deepEqual(resolveServerUrls({ server: "" }, llamaConfig), [
+    "http://localhost:9090",
+  ])
+})
+
+test("no options uses detected providers", () => {
+  assert.deepEqual(resolveServerUrls(undefined, llamaConfig), [
+    "http://localhost:9090",
+  ])
+})
+
+test("no options and no matching providers falls back to localhost", () => {
+  assert.deepEqual(
+    resolveServerUrls(undefined, {
+      provider: { vision: { options: { baseURL: "http://headless.local:8080/v1" } } },
+    }),
+    ["http://localhost:8080"],
+  )
+})
+```
+
+- [ ] **Step 2: Run tests to verify they fail**
+
+Run: `npx -y tsx test-backoff.ts`
+Expected: FAIL — `SyntaxError: The requested module './src/stats.ts' does not provide an export named 'resolveServerUrls'`
+
+- [ ] **Step 3: Implement**
+
+Append to `src/stats.ts` (after `processPoll`). These two helpers are moved verbatim from `tui.tsx` (lines 46–74 there; they will be deleted from `tui.tsx` in Task 2):
+
+```ts
+export function stripBaseUrlPath(baseURL: string): string {
+  try {
+    const url = new URL(baseURL)
+    return `${url.origin}`
+  } catch {
+    return baseURL.replace(/\/v1(\/.*)?$/, "").replace(/\/$/, "") || baseURL
+  }
+}
+
+export function extractProviderUrls(config: unknown): string[] {
+  if (!config || typeof config !== "object") return []
+  const obj = config as Record<string, unknown>
+  const provider = obj.provider
+  if (!provider || typeof provider !== "object") return []
+
+  const urls: string[] = []
+  for (const [key, val] of Object.entries(provider as Record<string, unknown>)) {
+    if (val && typeof val === "object") {
+      const opts = (val as Record<string, unknown>).options
+      if (opts && typeof opts === "object") {
+        const baseURL = (opts as Record<string, unknown>).baseURL || (opts as Record<string, unknown>).base_url
+        if (typeof baseURL === "string" && key.toLowerCase().includes("llama") && !key.toLowerCase().includes("ollama")) {
+          urls.push(stripBaseUrlPath(baseURL))
+        }
+      }
+    }
+  }
+  return urls
+}
+
+export function resolveServerUrls(options: unknown, config: unknown): string[] {
+  const opts = options && typeof options === "object" ? (options as Record<string, unknown>) : undefined
+  const server = opts?.server
+  if (typeof server === "string" && server.trim() !== "") {
+    return [stripBaseUrlPath(server)]
+  }
+  if (server !== undefined) {
+    console.warn("[oc-ls-stats] ignoring invalid 'server' plugin option, falling back to provider detection")
+  }
+  const detected = extractProviderUrls(config)
+  return detected.length > 0 ? detected : ["http://localhost:8080"]
+}
+```
+
+- [ ] **Step 4: Run tests to verify they pass**
+
+Run: `npx -y tsx test-backoff.ts`
+Expected: PASS — all existing backoff tests plus the six new tests (a `console.warn` line appears for the non-string case; that is expected)
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/stats.ts test-backoff.ts
+git commit -m "feat: resolve server endpoint from plugin options"
+```
+
+---
+
+### Task 2: Wire options into `tui.tsx`
+
+**Files:**
+- Modify: `tui.tsx:5` (import), `tui.tsx:46-82` (delete moved helpers), `tui.tsx:151` (signature), `tui.tsx:345-351` (startup block)
+
+- [ ] **Step 1: Update the import**
+
+Change line 5 from:
+
+```ts
+import { backoffDelayMs, processPoll } from "./src/stats.ts"
+```
+
+to:
+
+```ts
+import { backoffDelayMs, processPoll, resolveServerUrls } from "./src/stats.ts"
+```
+
+- [ ] **Step 2: Delete the moved helpers**
+
+Delete these three functions from `tui.tsx` (now duplicated in `src/stats.ts`):
+- `stripBaseUrlPath` (lines 46–53)
+- `extractProviderUrls` (lines 55–74)
+- `loadConfigUrls` (lines 76–82)
+
+They are only referenced by the startup block replaced in Step 4.
+
+- [ ] **Step 3: Accept the options argument**
+
+Change line 151 from:
+
+```ts
+const tui: TuiPlugin = async (api) => {
+```
+
+to:
+
+```ts
+const tui: TuiPlugin = async (api, options) => {
+```
+
+(`TuiPlugin`'s second parameter is `PluginOptions | undefined`; passing it to an `unknown` parameter needs no cast.)
+
+- [ ] **Step 4: Replace the startup block**
+
+Replace lines 345–351:
+
+```ts
+  try {
+    const configUrls = await loadConfigUrls(api)
+    llamaServerUrls = configUrls.length > 0 ? configUrls : ["http://localhost:8080"]
+  } catch (e) {
+    console.error("[oc-ls-stats] loadConfigUrls error:", e)
+    llamaServerUrls = ["http://localhost:8080"]
+  }
+```
+
+with:
+
+```ts
+  try {
+    llamaServerUrls = resolveServerUrls(options, api.state.config)
+  } catch (e) {
+    console.error("[oc-ls-stats] resolveServerUrls error:", e)
+    llamaServerUrls = ["http://localhost:8080"]
+  }
+```
+
+- [ ] **Step 5: Verify tests still pass and no stale references remain**
+
+Run: `npx -y tsx test-backoff.ts`
+Expected: PASS
+
+Run: `grep -n "loadConfigUrls\|extractProviderUrls\|stripBaseUrlPath" tui.tsx`
+Expected: no output
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add tui.tsx
+git commit -m "feat: read explicit server endpoint from plugin options"
+```
+
+---
+
+### Task 3: Document the option in README
+
+**Files:**
+- Modify: `README.md` ("### Server Discovery" section, around line 48)
+
+- [ ] **Step 1: Update the Server Discovery section**
+
+Replace the section body:
+
+```markdown
+The plugin discovers the llama-server URL by reading the OpenCode configuration via the TUI API and extracting `baseURL`/`base_url` fields from provider options whose name contains "llama" (but excludes providers whose name contains "ollama"). Falls back to `http://localhost:8080` if no matching provider is found.
+```
+
+with:
+
+```markdown
+By default the plugin discovers the llama-server URL by reading the OpenCode configuration via the TUI API and extracting `baseURL`/`base_url` fields from provider options whose name contains "llama" (but excludes providers whose name contains "ollama"). Falls back to `http://localhost:8080` if no matching provider is found.
+
+If your llama-server provider is named differently, configure the endpoint explicitly via the plugin's `server` option in `tui.json`. An explicit server replaces discovery entirely:
+
+```json
+{
+  "plugin": [
+    ["@troed/oc-ls-stats@latest", { "server": "http://headless.local:8080" }]
+  ]
+}
+```
+
+A `baseURL`-style value ending in `/v1` is also accepted.
+```
+
+- [ ] **Step 2: Commit**
+
+```bash
+git add README.md
+git commit -m "docs: document explicit server option"
+```
+
+---
+
+### Task 4: Final verification
+
+- [ ] **Step 1: Run the full prepack suite**
+
+Run: `npm run prepack`
+Expected: all tests PASS, exit code 0
+
+- [ ] **Step 2: Confirm clean tree**
+
+Run: `git status --short`
+Expected: no output (all changes committed)
+
+No version bump: tagging 1.3.0 is deferred until the planned batch of work is complete (per spec).