Merge pull request 'Chore/apache 2.0 license' (#23) from chore/apache-2.0-license into main

Reviewed-on: #23

.claude/skills/fastcrw-search-api/SKILL.md

@@ -36,7 +36,7 @@ Result: `url`, `title`, `description`, `snippet` (always-populated alias of `des
 Body `{ "success": false, "error": string, "error_code": string }`.
 
 | HTTP | error_code                            |
-|---|---|
+| ---- | ------------------------------------- |
 | 400  | `invalid_request`                     |
 | 401  | auth middleware message               |
 | 422  | `target_unreachable`                  |

.claude/skills/opencode-v2-plugin/SKILL.md

@@ -43,23 +43,29 @@ await ctx.websearch.transform((editor) => {
 
 ```jsonc
 {
-  "plugins": [{ "package": "~/.config/opencode/plugins/fastcrw", "options": { "baseURL": "http://crw.home:3000", "limit": 8 } }],
+  "plugins": [
-  "websearch": { "provider": "fastcrw" }
+    {
+      "package": "@haylan/opencode-fastcrw",
+      "options": { "baseURL": "http://crw.home:3000", "limit": 8 },
+    },
+  ],
 }
 ```
 
 - Key is plural `plugins` (v1: `plugin`). Entries are a string or `{ package, options }`.
-- `package` may be an npm name (`name`, `name@1.2.0`, `@scope/name`), `./local`, an absolute path or `file://`.
+- `package` may be an npm name (`name`, `name@1.2.0`, `@scope/name`), `./relative` (resolved from the config file), an absolute path or `file://`. `~` is not expanded.
-- Auto-discovered: `.ts`/`.js` files and packages in `.opencode/plugins/` and `~/.config/opencode/plugins/`.
+- **Local paths must be directories**, resolved by file path (`<dir>/server`, then `<dir>/index`); `package.json` `exports` are ignored. A file entry is ignored with a warning, and a directory without a root `index`/`server` file loads silently nothing. npm names resolve through `exports`.
-- `websearch.provider` is a provider id or `"random"`; `"websearch": false` disables search. Built-in ids: exa, firecrawl, parallel, tavily, tinyfish.
+- Auto-discovered: `.ts`/`.js` files (not `.mjs`) and directories in `.opencode/plugins/` and `~/.config/opencode/plugins/`. Drop-in files get no options.
-- CLI: `opencode plugin add|list|check|update|remove`.
+- `websearch.provider` is a provider id or `"random"`; `"websearch": false` disables search. Built-in ids: exa, firecrawl, parallel, tavily, tinyfish. A provider named here **wins** over a plugin's `editor.default.set`; with it unset, the plugin's default applies.
+- CLI: `opencode plugin add|list|check|update|remove` (`add` writes the global config).
+- Loading is lazy: after startup or reload the plugin list fills in after several seconds. Load errors show as `state.status: "failed"` in `GET /api/plugin` (private server: `opencode serve`, Basic auth user `opencode`).
 
 ## Packaging (npm)
 
 `"type": "module"`, `exports["."]` pointing at the entry, dependency on `@opencode/plugin`.
 
-## Unverified: check at runtime, do not assume
+## Still unverified
 
-- Exact TypeScript types for the editor, `time` and `execute` args (read `@opencode/plugin` typings after install).
+- Installing by name from the Gitea registry with a scoped `.npmrc`.
-- Inner shape of `time`, and whether extra result fields are allowed.
+
-- Precedence between config `websearch.provider` and `editor.default.set(id)`.
+Verified results: `docs/runtime-checks.md`.

.gitea/workflows/check.yml

@@ -0,0 +1,18 @@
+name: check
+
+on:
+  pull_request:
+    branches: [main]
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 24
+      - run: npm ci
+      - run: npm run check
+      - run: npm test
+      - run: npm run build

.gitea/workflows/release.yml

@@ -0,0 +1,22 @@
+name: release
+
+on: workflow_dispatch
+
+jobs:
+  release:
+    if: gitea.ref == 'refs/heads/main'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 24
+      - run: npm ci
+      - run: npm test
+      - run: npm run build
+      - run: node scripts/release.ts
+        env:
+          SERVER_URL: ${{ gitea.server_url }}
+          REPOSITORY: ${{ gitea.repository }}
+          SHA: ${{ gitea.sha }}
+          TOKEN: ${{ secrets.PACKAGE_TOKEN }}

.gitignore

@@ -0,0 +1,4 @@
+node_modules/
+dist/
+.release/
+package.tgz

.prettierignore

@@ -0,0 +1,3 @@
+node_modules
+dist
+package-lock.json

.prettierrc.json

@@ -0,0 +1,4 @@
+{
+  "semi": false,
+  "printWidth": 100
+}

CHANGELOG.md

@@ -0,0 +1,17 @@
+# Changelog
+
+All notable changes to this project are documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
+
+## [Unreleased]
+
+## [0.0.1] - 2026-10-03
+
+### Added
+
+- opencode v2 plugin `fastcrw.websearch` that registers a `fastcrw` search provider backed by a self-hosted fastCRW server (`POST /v1/search`) and makes it the default websearch provider.
+- Plugin options `baseURL`, `apiKey`, `limit`, `lang` and `tbs`, with `CRW_API_URL` and `CRW_API_KEY` as environment fallbacks.
+- Validation at plugin load: a bad option makes the plugin fail with a message naming the option.
+- Mapping of both fastCRW response shapes (`data[]` and `data.results`) and descriptive errors for API failures, non-JSON responses, unreachable servers and timeouts.
+- Gitea Actions workflows for pull request checks and for publishing releases to the Gitea npm registry.

CONTEXT.md

@@ -20,6 +20,10 @@ _Avoid_: host, server URL
 The optional Bearer key sent to the fastCRW server. Set by the `apiKey` option or `CRW_API_KEY`. Absent means no auth header.
 _Avoid_: secret, password
 
+**Release**:
+A version recorded as a dated heading in `CHANGELOG.md` and published to the Gitea npm registry. The latest changelog heading is the current release.
+_Avoid_: build, tag (a release is defined by the changelog, not a git tag)
+
 **Plugin options**:
 The values opencode passes to the plugin from `opencode.json`: `baseURL`, `apiKey`, `limit`, `lang`, `tbs`.
 _Avoid_: settings, config (config means `opencode.json` as a whole)

LICENSE

@@ -0,0 +1,51 @@
+Apache License
+Version 2.0, January 2004
+http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+"License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document.
+
+"Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License.
+
+"Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity.
+
+"You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License.
+
+"Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files.
+
+"Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and conversions to other media types.
+
+"Work" shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below).
+
+"Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship. For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof.
+
+"Contribution" shall mean any work of authorship, including the original version of the Work and any modifications or additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication sent to the Licensor or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright owner as "Not a Contribution."
+
+"Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work.
+
+2. Grant of Copyright License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form.
+
+3. Grant of Patent License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or by combination of their Contribution(s) with the Work to which such Contribution(s) was submitted. If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work constitutes direct or contributory patent infringement, then any patent licenses granted to You under this License for that Work shall terminate as of the date such litigation is filed.
+
+4. Redistribution. You may reproduce and distribute copies of the Work or Derivative Works thereof in any medium, with or without modifications, and in Source or Object form, provided that You meet the following conditions:
+
+You must give any other recipients of the Work or Derivative Works a copy of this License; and
+You must cause any modified files to carry prominent notices stating that You changed the files; and
+You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and
+If the Work includes a "NOTICE" text file as part of its distribution, then any Derivative Works that You distribute must include a readable copy of the attribution notices contained within such NOTICE file, excluding those notices that do not pertain to any part of the Derivative Works, in at least one of the following places: within a NOTICE text file distributed as part of the Derivative Works; within the Source form or documentation, if provided along with the Derivative Works; or, within a display generated by the Derivative Works, if and wherever such third-party notices normally appear. The contents of the NOTICE file are for informational purposes only and do not modify the License. You may add Your own attribution notices within Derivative Works that You distribute, alongside or as an addendum to the NOTICE text from the Work, provided that such additional attribution notices cannot be construed as modifying the License.
+You may add Your own copyright statement to Your modifications and may provide additional or different license terms and conditions for use, reproduction, or distribution of Your modifications, or for any such Derivative Works as a whole, provided Your use, reproduction, and distribution of the Work otherwise complies with the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS

NOTICE

@@ -0,0 +1,14 @@
+Copyright 2026 Arthur Erlich
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+

README.md

@@ -0,0 +1,101 @@
+# @haylan/opencode-fastcrw
+
+An [opencode](https://opencode.ai) v2 plugin that makes a self-hosted [fastCRW](https://docs.fastcrw.com) server opencode's websearch. It calls `POST {baseURL}/v1/search` directly; it does not use the `crw-mcp` MCP server.
+
+The plugin registers a search provider with id `fastcrw` and makes it the default. If fastCRW fails, searches fail; they never fall back to the built-in providers (Exa, Firecrawl, Parallel, Tavily, TinyFish).
+
+## Install
+
+The package is published to the Gitea npm registry. Map the scope to it in your user-level `~/.npmrc`:
+
+```
+@haylan:registry=https://git.arthurerlich.de/api/packages/haylan/npm/
+```
+
+It has to be the user-level file (or the equivalent `npm_config_@haylan:registry` environment variable): opencode installs plugins from its own cache folder and ignores a project-level `.npmrc`, and without the mapping it looks for the package on npmjs.com and fails with a 404.
+
+Then install it with opencode, which also adds it to your config:
+
+```bash
+opencode plugin add @haylan/opencode-fastcrw
+```
+
+A plugin that is only listed in `opencode.json` is not installed automatically. Add your options to the entry that `plugin add` created:
+
+```jsonc
+{
+  "plugins": [
+    {
+      "package": "@haylan/opencode-fastcrw",
+      "options": { "baseURL": "http://crw.home:3000" },
+    },
+  ],
+}
+```
+
+Verified with 0.0.1 against opencode v2.0.22; see [docs/runtime-checks.md](docs/runtime-checks.md).
+
+### Local build
+
+To try the plugin without a registry:
+
+```bash
+npm ci
+npm run build
+```
+
+opencode loads local plugins as directories, resolved by file path (`<dir>/server`, then `<dir>/index`), and ignores `package.json` `exports`, so this package cannot be pointed at directly. Use a small shim instead. Create `~/.config/opencode/plugins/fastcrw.js` (a `.js` or `.ts` file; `.mjs` is ignored) with:
+
+```js
+export { default } from "file:///ABSOLUTE/PATH/TO/fastcrw-opencode-websearch/dist/index.js"
+```
+
+A drop-in file cannot receive plugin options, so configure the plugin with the environment variables below (`CRW_API_URL`, `CRW_API_KEY`). To use options instead, put the same line in an `index.js` inside a directory and reference that directory as `"package": "./that-dir"` (a relative path is resolved from the config file; `~` is not expanded).
+
+## Configuration
+
+Plugin options come from `opencode.json`. Precedence is option, then environment variable, then default.
+
+| Option    | Environment variable | Default                 | Notes                                                                                   |
+| --------- | -------------------- | ----------------------- | --------------------------------------------------------------------------------------- |
+| `baseURL` | `CRW_API_URL`        | `http://localhost:3000` | Base URL of the fastCRW server, `http` or `https`. Trailing slashes are removed.        |
+| `apiKey`  | `CRW_API_KEY`        | none                    | Optional. Sent as a Bearer token. Prefer the environment variable over `opencode.json`. |
+| `limit`   | none                 | `8`                     | Results per search, clamped to 1 to 20. An invalid value falls back to 8.               |
+| `lang`    | none                 | unset                   | Search language, for example `en` or `de`. Omitted from the request when unset.         |
+| `tbs`     | none                 | unset                   | Time range: `qdr:h`, `qdr:d`, `qdr:w`, `qdr:m` or `qdr:y`.                              |
+
+A bad `baseURL`, `tbs`, `lang` or `apiKey` makes the plugin fail to load, with a message naming the option. opencode keeps running and shows the plugin as failed.
+
+### Choosing the provider
+
+Do not set `websearch.provider` to another provider. In opencode, a provider named in `opencode.json` wins over the one a plugin sets as default, so `"websearch": { "provider": "exa" }` would send your searches to Exa. Leaving it unset, or setting it to `"fastcrw"`, uses this plugin.
+
+## Errors
+
+Failures are thrown as `fastCRW <status> <error_code>: <message>`, with a hint for a missing or invalid key (401) and for a server without a search backend (503 `search_disabled`). A server that is unreachable, times out (30 s) or returns something that is not JSON gets its own message. opencode currently shows only a generic "Web search request failed: fastcrw", so check the server when searches fail.
+
+A self-hosted fastCRW server needs a SearXNG-style search backend (`CRW_SEARCH__SEARCH_BACKEND_URL`); without one, searches return 503.
+
+## Development
+
+```bash
+npm ci
+npm run check   # Prettier and type check
+npm test        # node --test, needs Node 22.18 or later
+npm run build   # compile to dist/
+npm run smoke -- "query"   # one real search against CRW_API_URL (manual)
+```
+
+`docs/spec.md` is the build spec, `docs/runtime-checks.md` records what was verified against a real opencode, and `CONTEXT.md` defines the vocabulary.
+
+### Releasing
+
+Releases are published by the manually started `release` workflow on Gitea Actions. It reads the latest version heading in `CHANGELOG.md` (the repository keeps the dev version `0.0.0-dev` in `package.json`) and then:
+
+1. publishes that version to the Gitea npm registry, unless it already exists;
+2. tags the workflow's commit `v<version>`, unless the tag already exists;
+3. links the package to this repository, unless it is already linked.
+
+Every step skips itself when done, so starting the workflow again completes a release that only partly succeeded.
+
+To release: add a dated `## [x.y.z]` entry to `CHANGELOG.md`, merge it to `main`, then start the workflow. It needs the `PACKAGE_TOKEN` repository secret, a token with `write:package` and `write:repository` rights.

docs/research/fastcrw-search-api.md

@@ -19,7 +19,7 @@ Resolves issue #3. Researched 2026-10-03 against `main` of github.com/us/crw (`f
 ## Env var names
 
 | Var                  | Used by          | Meaning                                                                                             |
-|---|---|---|
+| -------------------- | ---------------- | --------------------------------------------------------------------------------------------------- |
 | `CRW_API_URL`        | crw-mcp, crw CLI | Remote server base URL. Default `https://api.fastcrw.com`; `http://localhost:3000` for self-hosted. |
 | `CRW_API_KEY`        | crw-mcp, crw CLI | Bearer token for the remote server.                                                                 |
 | `CRW_LOCAL`          | crw-mcp          | Truthy forces embedded mode, ignoring `CRW_API_URL`.                                                |
@@ -35,7 +35,7 @@ Plugin should use `CRW_API_URL` / `CRW_API_KEY` to match upstream naming.
 Source: `SearchRequest` in crates/crw-core/src/types.rs (camelCase serde); blog/crw-search-api-release.md.
 
 | Field                                                                                                   | Type             | Notes                                                                                  |
-|---|---|---|
+| ------------------------------------------------------------------------------------------------------- | ---------------- | -------------------------------------------------------------------------------------- |
 | `query`                                                                                                 | string, required | Max 2000 chars (handler validation).                                                   |
 | `limit`                                                                                                 | int, optional    | Default 5 (`default_limit`); clamped server-side to `1..=max_limit` (max 20).          |
 | `lang`                                                                                                  | string           | SearXNG language, e.g. `en`, `de`, `auto`; validated as a language tag.                |
@@ -56,9 +56,19 @@ Envelope `ApiResponse` (camelCase, absent fields omitted): `success`, `data`, `e
 Hosted example (flat, per docs):
 
 ```json
-{"success": true, "data": [
+{
-  {"url": "https://...", "title": "...", "description": "...", "snippet": "...", "position": 1, "score": 9.5}
+  "success": true,
-]}
+  "data": [
+    {
+      "url": "https://...",
+      "title": "...",
+      "description": "...",
+      "snippet": "...",
+      "position": 1,
+      "score": 9.5
+    }
+  ]
+}
 ```
 
 Self-hosted (CLI parser handles `{"success": true, "data": {"results": [ ... ]}}`).
@@ -72,7 +82,7 @@ Conflict note: the docs example and CLI show flat `data[]` for hosted; the struc
 JSON body `{"success": false, "error": "<message>", "error_code": "<code>"}` (crates/crw-server/src/error.rs).
 
 | HTTP | error_code                            | Cause                            |
-|---|---|---|
+| ---- | ------------------------------------- | -------------------------------- |
 | 400  | `invalid_request`                     | bad query/limit/lang             |
 | 401  | (auth middleware message)             | missing/invalid key              |
 | 429  | `rate_limited`                        | rate limit                       |

docs/research/opencode-v2-plugin-api.md

@@ -14,7 +14,7 @@ Caveat: pages were read through a fetch-and-summarise tool, so quotes are as ret
 ## Verdict on the user's sketch
 
 | Sketch element                                   | Verdict            | Evidence                                                                                                                                                                 |
-|---|---|---|
+| ------------------------------------------------ | ------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
 | `Plugin.define` from `"@opencode/plugin"`        | RIGHT              | [S1] `import { Plugin } from "@opencode/plugin"` / `export default Plugin.define({ id: "example", async setup(ctx) {...} })`. V1 package was `@opencode-ai/plugin` [S5]. |
 | `ctx.websearch.transform`                        | RIGHT              | [S1] `await ctx.websearch.transform((editor) => { ... })`                                                                                                                |
 | `editor.add`                                     | RIGHT              | [S1] `editor.add({ id: "internal", name: "Internal search", execute: async ({ query }, { signal }) => {...} })`                                                          |
@@ -22,6 +22,7 @@ Caveat: pages were read through a fetch-and-summarise tool, so quotes are as ret
 | `websearch.provider`                             | RIGHT (config key) | [S3][S4] `{ "websearch": { "provider": "tavily" } }`; also `"random"`. Built-in ids: exa, firecrawl, parallel, tavily, tinyfish [S4].                                    |
 
 Things the sketch likely missed / must add:
+
 - `id` is required on `Plugin.define` (stable, used for storage scoping/diagnostics) [S5].
 - A plugin-added provider is made active with `editor.default.set("<id>")` [S1]; `websearch.provider` in config selects by provider id, so `"provider": "<your-id>"` is the expected pairing (inference from [S1]+[S4]; docs do not state it explicitly -> verify at runtime).
 - Options are read as `ctx.options` (not passed as a setup arg) [S1].
@@ -29,47 +30,64 @@ Things the sketch likely missed / must add:
 ## Sub-questions
 
 ### 1. Plugin entry / definition shape
+
 Each module has one default export with a unique id and `setup`:
+
 ```ts
 import { Plugin } from "@opencode/plugin"
 export default Plugin.define({
   id: "example",
-  async setup(ctx) { /* may return a cleanup function */ },
+  async setup(ctx) {
+    /* may return a cleanup function */
+  },
 })
 ```
+
 [S1][S5]. Context: `ctx.app.version`, `ctx.location` (`directory`, optional `workspaceID`, project), `ctx.options`, `ctx.storage` (durable JSON, plugin-scoped), plus domains `ctx.session/permission/shell/tool/websearch/...` [S1][S5]. Return cleanup from `setup` for timers/sockets [S5]. V1 plugins do not run in V2; dual-support is possible via spreading `Plugin.define(...)` and adding a V1 `server()` [S1][S5].
 
 ### 2. Registration/loading (local path vs npm)
+
 `"plugins"` array in `opencode.json(c)`; entries are strings or objects [S2]:
 npm `"opencode-acme-plugin"`, `"opencode-acme-plugin@1.2.0"`, `"@acme/opencode-plugin"`; local `"./plugins/local"`, `"../shared/plugin.ts"`, `"/abs/plugin.ts"`, `"file:///..."`. Also auto-discovery of `.ts/.js` files and packages in `.opencode/plugins/` or `~/.config/opencode/plugins/` [S2]. CLI: `opencode plugin add|list|check|update|remove` [S2]. Disable via ids: `["*", "-opencode.provider.*", ...]` [S2]. Published package needs `"type":"module"`, `exports["."]` -> entry, dependency `@opencode/plugin` [S1].
 
 ### 3. Passing options
+
 ```jsonc
-{ "plugins": [ { "package": "./plugins/company", "options": { "strict": true } } ] }
+{ "plugins": [{ "package": "./plugins/company", "options": { "strict": true } }] }
 ```
+
 read via `ctx.options.strict` in `setup` [S1][S3]. Options type is untyped key/value (validate yourself).
 
 ### 4. Can a plugin provide/replace the websearch provider?
+
 Yes. [S1]:
+
 ```ts
 await ctx.websearch.transform((editor) => {
-  editor.add({ id: "internal", name: "Internal search",
+  editor.add({
+    id: "internal",
+    name: "Internal search",
     execute: async ({ query }, { signal }) => {
       const response = await fetch(`https://search.example.com?q=${query}`, { signal })
       return [{ url: "", title: "", content: "", time: {} }]
-    } })
+    },
+  })
   editor.default.set("internal")
 })
 ```
+
 Disable: `editor.default.set(false)`; re-evaluate: `await ctx.websearch.reload()` [S1]. The API reference lists add/default/remove operations [S6] (remove not shown in S1 example; exact editor type unverified).
 
 ### 5. How `websearch.provider` is selected
+
 Config `{ "websearch": { "provider": "<id>" | "random" } }`; `"random"` picks an available provider; `"websearch": false` disables search entirely [S3][S4]. Provider on HTTP 429 enters cooldown and search retries another provider [S4]. Provider API keys via `/connect` or env (e.g. `TAVILY_API_KEY`) [S4]. For a plugin provider, `editor.default.set(id)` is the plugin-side selection [S1]; interplay/precedence with the config `provider` key is not documented -> verify.
 
 ### 6. Required search result shape
+
 From [S1] the `execute` return is an array of `{ url, title, content, time }`; the example uses `time: {}` (object, inner shape undocumented). [S6] lists the same four fields. Unverified: whether `time` fields are optional, exact `time` keys (e.g. published/updated), and whether extra fields are allowed. `execute` receives `({ query }, { signal })`; `signal` is an AbortSignal and must be passed to fetch [S1].
 
 ## Open items (need source or runtime check)
+
 - Exact TS types for editor, `time`, and execute args (read anomalyco/opencode source or `@opencode/plugin` typings after install).
 - Precedence of config `websearch.provider` vs plugin `editor.default.set`.
 - [S6] suggested `POST /api/websearch/query` with `{query, provider?}` -> `{results, provider}`; this came from the summariser and is lower confidence.

docs/runtime-checks.md

@@ -0,0 +1,84 @@
+# Runtime checks
+
+Results of the verification list in `docs/spec.md`. Run on 2026-10-03 against opencode v2.0.22 (Windows), in an isolated profile (`XDG_CONFIG_HOME`, `XDG_DATA_HOME`, `XDG_CACHE_HOME`, `XDG_STATE_HOME` pointed at a temp folder, a private `opencode serve` on a local port, a mock fastCRW server on another), so the real opencode config was never touched.
+
+## Summary
+
+| #   | Check                                               | Result                                                        |
+| --- | --------------------------------------------------- | ------------------------------------------------------------- |
+| 1   | Built-in providers removable or disableable         | Done: not removable by a plugin, but never used as a fallback |
+| 2   | Throwing `setup` disables only this plugin          | Done: yes, loudly                                             |
+| 3   | Config `websearch.provider` vs `editor.default.set` | Done: config wins                                             |
+| 4   | Install by name from the Gitea registry             | Done: works with a user-level scope mapping                   |
+| 5   | Release token has package-write rights              | Done: the release uses the `PACKAGE_TOKEN` secret             |
+| 6   | `@opencode/plugin` install weight                   | Done                                                          |
+| 7   | `npm run smoke` against the real fastCRW server     | Done                                                          |
+| 8   | Typings, `time` shape, 429 cooldown                 | Done: a 429 from our plugin triggers no cooldown              |
+
+## How plugins load (read this first)
+
+Read from the opencode binary and confirmed with hello-world plugins:
+
+- A `plugins` entry in `opencode.json` that points at a **file** is ignored with the warning "configured plugin path must be a directory". It must be a directory, or an npm package name.
+- A local directory is resolved **by file path**: `<dir>/server` then `<dir>/index`. The directory's `package.json` `exports` are not used. This repo has no root `index.js` (the entry is `dist/index.js`), so pointing a config entry at the repo or an unpacked package directory loads nothing and logs nothing. My first three attempts failed for this reason.
+- An npm package name resolves through `exports` (`<name>/server`, then `<name>`), so `exports["."]` works for registry installs (still unverified end to end, check 4).
+- Auto-discovery in `plugins/` folders (global config dir or project `.opencode/`) accepts only `.ts` and `.js` files and directories. `.mjs` files are ignored.
+- `~` paths are not expanded; use `./relative`, an absolute path or `file://`. The `~/.config/opencode/plugins/fastcrw` example in the original sketch does not work.
+- Loading is lazy: the plugin list is empty for several seconds after startup or `POST /api/location/reload`.
+
+With a one-line directory shim (`index.js`: `export { default } from "file:///.../dist/index.js"`) the real plugin loaded, registered provider `fastcrw`, honoured `baseURL` and `limit` from the plugin options, and returned the mapped result for `POST /api/websearch`.
+
+## Findings
+
+### 1. Built-in providers
+
+The plugin API has no way to remove a provider (`WebSearchEditor` only has `add` and `default`), so the built-ins (exa, firecrawl, parallel, tavily, tinyfish) stay registered. In practice fastCRW is still the only one used:
+
+- With no `websearch` config, the plugin's `editor.default.set("fastcrw")` makes it the default.
+- When fastCRW was unreachable or returned 429, opencode answered 503 "Web search request failed: fastcrw". It did **not** fall back to a built-in.
+- If no default is set (for example the plugin failed to load), a query without a provider id is rejected with 400 "Web search provider is required".
+
+### 2. Throwing `setup`
+
+With `baseURL: "nope"`, only this plugin ended up in state `failed`, with our message and stack (`fastCRW: invalid baseURL "nope" (expected an http(s) URL)`), and a `WARN failed to load plugin` line was logged. The other plugins stayed `active` and the server kept running. The provider is then not registered. The plan holds: fail loudly, no silent search elsewhere.
+
+### 3. Precedence
+
+Config `websearch.provider` wins over the plugin's `editor.default.set`: with the config set to `exa`, a query without a provider id went to Exa (and worked without a key, so the query left the machine). With the config unset or set to `fastcrw`, the plugin's provider was used. Consequence: do not set `websearch.provider` to anything else; setting it to `fastcrw` is harmless and explicit.
+
+### 4. Install by name from the Gitea registry
+
+Release 0.0.1 is in the registry, linked to this repository, with tag `v0.0.1` (workflow run succeeded). Verified in an isolated profile:
+
+- `npm install @haylan/opencode-fastcrw` with the scoped `.npmrc` mapping works anonymously, and the installed package imports as plugin id `fastcrw.websearch`.
+- `opencode plugin add @haylan/opencode-fastcrw` with the mapping set through `npm_config_@haylan:registry` installs it and adds `"@haylan/opencode-fastcrw"` to the config. Without the mapping it queries registry.npmjs.org and fails with a 404.
+- opencode ignores a project-level `.npmrc` (it installs from its own cache folder), so the mapping must be in the user-level `~/.npmrc` or the environment.
+- A `plugins` entry by name is **not** installed automatically on startup; only `plugin add` installs. After adding options to the entry and starting the server, a search without a provider id went to `fastcrw` and returned 3 results (`limit` 3) from the real server `http://crw.home`.
+
+### 5. Release token
+
+The release workflow succeeded with the `PACKAGE_TOKEN` repository secret (rights `write:package` and `write:repository`): publishing, tag creation and the package link all worked. Decision: that secret stays, and the workflow uses it alone; the untested job-token fallback was removed.
+
+### 6. `@opencode/plugin` install weight
+
+`npm install` of `@opencode/plugin@2.0.22` adds about 100 MB of transitive dependencies (mainly `effect`, OpenTelemetry, `@redis`). Its peers `solid-js`, `@opentui/core`, `@opentui/solid` and `@opencode/theme` are optional and not installed. Decision for the first release: keep it in `dependencies` as the docs say; revisit if install size matters.
+
+### 7. Smoke test
+
+Run against `http://crw.home` and `http://192.168.2.15:8013` (the same server; earlier attempts failed on DNS, a refused connection and an upstream 502 until the service came up). No token was needed. The envelope is `{ success, data }` and `data` is an object, so this server returns the self-hosted shape `data.results`, not a flat array; the plugin's dual-shape parser handles it. Each result has `url`, `title`, `description`, `snippet`, `position`, `score` and `category`.
+
+### 8. Typings, `time`, 429
+
+From `@opencode/schema` 2.0.22: a result is `{ url: string, title?: string, content?: string, time: { published?: number } }`, so `time: {}` is valid; `execute` receives `({ query }, { signal })`; `editor.default.set(selection: string | false)`. A 429 from fastCRW surfaced as a plain failure: three queries in a row all reached the server, so no provider cooldown was triggered. opencode also shows only the generic "Web search request failed: fastcrw" through the API; our detailed message was not visible there or in the debug log.
+
+## Follow-ups this implies
+
+- Decided against a root `index.js`: local testing uses a drop-in shim (see the README), and the package is installed by name through the registry.
+- Done: README install section and examples corrected (no `~` paths, directories only for local entries).
+- Optional: decide whether the generic user-facing error is acceptable, since our detailed messages are not surfaced.
+
+## Useful for later runs
+
+- `opencode serve --hostname 127.0.0.1 --port <p>` prints a generated server password; HTTP Basic auth with user `opencode` works. `GET /openapi.json` lists the API.
+- Relevant operations: `GET /api/plugin` (shows `state`, including load errors), `GET /api/websearch/provider`, `POST /api/websearch` (body `query`, optional `providerID`), `POST /api/location/reload`.
+- `opencode debug config` hung in an empty profile; `opencode plugin add` writes to the global config, so avoid it on a real machine.

docs/spec.md

@@ -0,0 +1,122 @@
+# Spec: fastCRW websearch plugin for opencode v2
+
+Compiled from the closed tickets on the map ([Wayfinder map: fastCRW websearch plugin for opencode v2](https://git.arthurerlich.de/haylan/fastcrw-opencode-websearch/issues/1)). Detail lives in each ticket and in `docs/research/`. Vocabulary is defined in `CONTEXT.md`. Reference skills: `.claude/skills/opencode-v2-plugin`, `.claude/skills/fastcrw-search-api`.
+
+## Goal
+
+An opencode v2 plugin that makes a self-hosted fastCRW server opencode's only websearch **search provider**, via `POST {baseURL}/v1/search`. It is a native plugin, not the `crw-mcp` MCP server.
+
+## Identifiers
+
+| What                        | Value                                                  |
+| --------------------------- | ------------------------------------------------------ |
+| npm package                 | `@haylan/opencode-fastcrw`                             |
+| Plugin id (`Plugin.define`) | `fastcrw.websearch`                                    |
+| Provider id / display name  | `fastcrw` / "fastCRW"                                  |
+| Registry                    | `https://git.arthurerlich.de/api/packages/haylan/npm/` |
+
+## Plugin behaviour
+
+`src/index.ts` only wires things together:
+
+```ts
+export default Plugin.define({
+  id: "fastcrw.websearch",
+  async setup(ctx) {
+    const config = resolveConfig(ctx.options, process.env) // throws on bad values
+    await ctx.websearch.transform((editor) => {
+      editor.add({
+        id: "fastcrw",
+        name: "fastCRW",
+        execute: ({ query }, { signal }) => search(config, query, signal, fetch),
+      })
+      editor.default.set("fastcrw")
+    })
+  },
+})
+```
+
+fastCRW is the default and only provider; there is no fallback to built-ins.
+
+### Config (`src/config.ts`)
+
+Precedence: plugin option > env var > default.
+
+| Option    | Env var       | Default                 | Rules                                                                  |
+| --------- | ------------- | ----------------------- | ---------------------------------------------------------------------- |
+| `baseURL` | `CRW_API_URL` | `http://localhost:3000` | trim, strip trailing `/`, must be `http(s)` URL                        |
+| `apiKey`  | `CRW_API_KEY` | none                    | optional; Bearer header only when set; never logged or echoed          |
+| `limit`   | none          | `8`                     | clamp to 1..20; invalid falls back to 8, never throws                  |
+| `lang`    | none          | unset                   | string; omitted from request when unset                                |
+| `tbs`     | none          | unset                   | one of `qdr:h`, `qdr:d`, `qdr:w`, `qdr:m`, `qdr:y`; omitted when unset |
+
+Validation runs in `setup`. A malformed `baseURL`, bad `tbs` or non-string `lang` makes `setup` throw, with a message naming the option and the bad value. Example `opencode.json`:
+
+```jsonc
+{
+  "plugins": [
+    {
+      "package": "@haylan/opencode-fastcrw",
+      "options": { "baseURL": "http://crw.home:3000", "limit": 8 },
+    },
+  ],
+  "websearch": { "provider": "fastcrw" },
+}
+```
+
+### Search (`src/search.ts`)
+
+- Request: `POST {baseURL}/v1/search`, JSON `{ query, limit, lang?, tbs? }`, `Authorization: Bearer <apiKey>` only when a key exists. Query sent as-is (server rejects over 2000 chars with 400).
+- Response: accept `data` as an array or `data.results` as an array; any other shape throws "unexpected response shape".
+- Mapping: `{ url, title, content: snippet || description || "", time: {} }`. Entries without a string `url` are dropped; a missing `title` falls back to `url`. Empty list returns `[]`.
+- Errors: throw `Error("fastCRW <status> <error_code>: <error>")`; HTTP 200 with `success:false` is handled the same (status 200). Fixed hints only for 401 ("check apiKey or CRW_API_KEY") and 503 `search_disabled` ("the server has no search backend configured"). Non-JSON body: `fastCRW <status>: non-JSON response` plus the first 200 chars. Network failure: `fastCRW: cannot reach <baseURL>` with the original error as `cause`. The token never appears in any message.
+- Abort: an abort via opencode's `signal` is rethrown untouched.
+- Timeout: fixed 30 s, combined with `signal` via `AbortSignal.any`; not configurable. No retries; a 429 keeps its status in the message.
+
+## Repository
+
+- Layout: `src/{config,search,index}.ts`, `test/*.test.ts`, `scripts/` (release and smoke), `docs/`, `CHANGELOG.md` (Keep a Changelog 1.1.0), `.gitea/workflows/`.
+- `package.json`: `"type": "module"`, `exports["."]` → `dist/index.js`, `engines.node >=20`, `version` `0.0.0-dev`, `@opencode/plugin` in `dependencies`. Scripts: `build` (`tsc`), `format` (`prettier --write .`), `check` (`prettier --check . && tsc --noEmit`), `test` (`node --test`), `smoke`.
+- TypeScript: `strict`, target ES2022, module `NodeNext`, plain `tsc` to `dist/` (ESM plus `.d.ts`). No bundler, no linter.
+- Prettier: `semi: false`, `printWidth: 100`. No pre-commit hooks.
+- Git: `main` is protected (PR required, 0 approvals, no force-push or deletion; already set up). Commits use Conventional Commits.
+
+## Tests (`node --test`, Node 24, `fetch` mocked)
+
+Cover: option/env/default precedence; each validation throw; `limit` clamp and fallback; request body and headers (Bearer only with a key; `lang`/`tbs` omitted when unset); both response shapes; every error path above; abort passthrough; the 30 s timeout.
+
+## Workflows (Gitea Actions, runner `ubuntu-latest`)
+
+1. `check.yml`, on `pull_request` to `main`: Node 24, `npm ci`, `npm run check`, `npm test`, `npm run build`. Once it exists, add its status as a required check on `main`.
+2. `release.yml`, `workflow_dispatch` only, run on `main`:
+   - read the latest `## [x.y.z]` heading in `CHANGELOG.md` (ignore `[Unreleased]`);
+   - set `package.json` `version` to it in the CI workspace only (never committed back);
+   - `npm ci`, `npm run build`;
+   - a dependency-free Node script in `scripts/` builds the tarball, `GET`s the registry to check the version, exits 0 with "already published" if it exists, else `PUT`s it to the registry API;
+   - no `npm publish`. Auth via a Gitea Actions secret.
+
+## Verification (manual, recorded in `docs/runtime-checks.md`)
+
+Run once on a real opencode v2 install; a failed check reopens the design as a new ticket on the map.
+
+1. Can built-in providers be removed or disabled? Fallback: `"websearch": false` plus an explicit `fastcrw`.
+2. Does a throwing `setup` disable only this plugin, not opencode startup?
+3. Precedence of config `websearch.provider` vs `editor.default.set`.
+4. Does install-by-name from the Gitea registry work with a scoped `.npmrc` (`@haylan:registry=...`)? Fallback: tarball or local path.
+5. Release token rights. Settled: the workflow uses a `PACKAGE_TOKEN` secret with `write:package` and `write:repository`; there is no job-token fallback.
+6. Does `npm install` of `@opencode/plugin` drag in `solid-js` and the OpenTUI peers? If heavy, move it to `peerDependencies` plus `devDependencies`.
+7. `npm run smoke` against the real fastCRW server (`CRW_API_URL`/`CRW_API_KEY`): record the real response shape (`data[]` vs `data.results`).
+8. Confirm the exact `@opencode/plugin` TypeScript types, the shape of `time`, and that a 429 status in an error message triggers opencode's provider cooldown.
+
+## Build order
+
+1. Open a PR with the pending `CONTEXT.md` change plus scaffold: `package.json`, `tsconfig.json`, Prettier config, `CHANGELOG.md` with `[Unreleased]`.
+2. `src/config.ts` and `src/search.ts` test-first, then `src/index.ts`.
+3. `check.yml`; make it a required check on `main`.
+4. `scripts/` release and smoke scripts, then `release.yml`.
+5. Run the verification list; write `docs/runtime-checks.md`.
+6. First release: add a changelog entry, run the release workflow.
+
+## Out of scope
+
+The `crw-mcp` MCP-server approach, pre-commit hooks, a bundler or linter, a configurable timeout, retries, and a fallback to built-in providers.

package.json

@@ -0,0 +1,38 @@
+{
+  "name": "@haylan/opencode-fastcrw",
+  "version": "0.0.0-dev",
+  "description": "opencode v2 plugin that makes a self-hosted fastCRW server the websearch provider",
+  "type": "module",
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "default": "./dist/index.js"
+    }
+  },
+  "files": [
+    "dist"
+  ],
+  "engines": {
+    "node": ">=20"
+  },
+  "scripts": {
+    "build": "tsc",
+    "format": "prettier --write .",
+    "check": "prettier --check . && tsc --noEmit",
+    "test": "node --test",
+    "smoke": "node scripts/smoke.ts"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://git.arthurerlich.de/haylan/fastcrw-opencode-websearch.git"
+  },
+  "license": "Apache-2.0",
+  "dependencies": {
+    "@opencode/plugin": "^2.0.22"
+  },
+  "devDependencies": {
+    "@types/node": "^26.6.4",
+    "prettier": "^3.9.9",
+    "typescript": "^7.0.2"
+  }
+}

scripts/release.ts

@@ -0,0 +1,148 @@
+// Publishes the latest CHANGELOG.md version to a Gitea npm registry without `npm publish`, tags the
+// commit `v<version>` and links the package to this repository. Every step is idempotent, so a
+// rerun repairs a release that is only partly done.
+// Env: SERVER_URL, REPOSITORY (owner/repo), SHA (from the workflow), TOKEN (needs write:package
+// and write:repository).
+import { execFileSync } from "node:child_process"
+import { createHash } from "node:crypto"
+import { cpSync, mkdirSync, readFileSync, rmSync, writeFileSync } from "node:fs"
+import { fileURLToPath } from "node:url"
+
+export function latestVersion(changelog: string): string {
+  const match = changelog.match(/^## \[(\d+\.\d+\.\d+(?:-[0-9A-Za-z.-]+)?)\]/m)
+  if (!match) throw new Error("no release heading like `## [1.0.0]` found in CHANGELOG.md")
+  return match[1]
+}
+
+export const encodeName = (name: string) => name.replace("/", "%2F")
+
+export const isPublished = (packument: { versions?: Record<string, unknown> }, version: string) =>
+  Boolean(packument.versions?.[version])
+
+export function publishBody(pkg: { name: string; version: string }, tarball: Buffer): object {
+  const { name, version } = pkg
+  const file = `${name}-${version}.tgz`
+  return {
+    _id: name,
+    name,
+    "dist-tags": { latest: version },
+    versions: {
+      [version]: {
+        ...pkg,
+        _id: `${name}@${version}`,
+        dist: {
+          shasum: createHash("sha1").update(tarball).digest("hex"),
+          integrity: `sha512-${createHash("sha512").update(tarball).digest("base64")}`,
+        },
+      },
+    },
+    _attachments: {
+      [file]: {
+        content_type: "application/octet-stream",
+        data: tarball.toString("base64"),
+        length: tarball.length,
+      },
+    },
+  }
+}
+
+type Api = { base: string; headers: Record<string, string>; fetchFn?: typeof fetch }
+
+async function call(api: Api, method: string, path: string, body?: object) {
+  return (api.fetchFn ?? fetch)(`${api.base}${path}`, {
+    method,
+    headers: { ...api.headers, "Content-Type": "application/json" },
+    body: body && JSON.stringify(body),
+  })
+}
+
+const fail = async (what: string, res: Response) =>
+  new Error(`${what} failed: ${res.status} ${await res.text()}`)
+
+export async function ensureTag(api: Api, repo: string, version: string, sha: string) {
+  const tag = `v${version}`
+  const existing = await call(api, "GET", `/repos/${repo}/tags/${tag}`)
+  if (existing.ok) return "exists"
+  if (existing.status !== 404) throw await fail("tag lookup", existing)
+  const res = await call(api, "POST", `/repos/${repo}/tags`, {
+    tag_name: tag,
+    target: sha,
+    message: `Release ${version}`,
+  })
+  if (!res.ok) throw await fail("tag creation", res)
+  return "created"
+}
+
+export async function ensureLinked(
+  api: Api,
+  owner: string,
+  name: string,
+  version: string,
+  repoName: string,
+) {
+  const pkg = `/packages/${owner}/npm/${encodeURIComponent(name)}`
+  const existing = await call(api, "GET", `${pkg}/${version}`)
+  if (!existing.ok) throw await fail("package lookup", existing)
+  if (((await existing.json()) as { repository?: unknown }).repository) return "already linked"
+  const res = await call(api, "POST", `${pkg}/-/link/${repoName}`)
+  if (!res.ok) throw await fail("package link", res)
+  return "linked"
+}
+
+async function main() {
+  const { SERVER_URL, REPOSITORY, SHA, TOKEN: token } = process.env
+  if (!SERVER_URL || !REPOSITORY || !SHA || !token) {
+    throw new Error("SERVER_URL, REPOSITORY, SHA and TOKEN must be set")
+  }
+  const [owner, repoName] = REPOSITORY.split("/")
+  const server = SERVER_URL.replace(/\/+$/, "")
+  const registry = `${server}/api/packages/${owner}/npm`
+
+  const version = latestVersion(readFileSync("CHANGELOG.md", "utf8"))
+  // The version is rewritten in the staged copy only; the repo keeps its dev version.
+  const pkg = { ...JSON.parse(readFileSync("package.json", "utf8")), version }
+  const url = `${registry}/${encodeName(pkg.name)}`
+  const headers = { Authorization: `Bearer ${token}` }
+
+  const existing = await fetch(url, { headers })
+  if (existing.ok && isPublished(await existing.json(), version)) {
+    console.log(`${pkg.name}@${version} is already published, skipping publish`)
+  } else if (!existing.ok && existing.status !== 404) {
+    throw new Error(`registry lookup failed: ${existing.status} ${await existing.text()}`)
+  } else {
+    await publish(pkg, url, headers)
+  }
+
+  const api = { base: `${server}/api/v1`, headers }
+  console.log(`tag v${version}: ${await ensureTag(api, REPOSITORY, version, SHA)}`)
+  console.log(`package link: ${await ensureLinked(api, owner, pkg.name, version, repoName)}`)
+}
+
+async function publish(
+  pkg: { name: string; version: string },
+  url: string,
+  headers: Record<string, string>,
+) {
+  const { version } = pkg
+  rmSync(".release", { recursive: true, force: true })
+  mkdirSync(".release/package", { recursive: true })
+  writeFileSync(".release/package/package.json", JSON.stringify(pkg, null, 2))
+  cpSync("dist", ".release/package/dist", { recursive: true })
+  execFileSync("tar", ["-czf", "package.tgz", "-C", ".release", "package"], { cwd: "." })
+  const tarball = readFileSync("package.tgz")
+
+  const res = await fetch(url, {
+    method: "PUT",
+    headers: { ...headers, "Content-Type": "application/json" },
+    body: JSON.stringify(publishBody(pkg, tarball)),
+  })
+  if (!res.ok) throw new Error(`publish failed: ${res.status} ${await res.text()}`)
+  console.log(`published ${pkg.name}@${version}`)
+}
+
+if (process.argv[1] === fileURLToPath(import.meta.url)) {
+  main().catch((err) => {
+    console.error(err.message)
+    process.exit(1)
+  })
+}

scripts/smoke.ts

@@ -0,0 +1,22 @@
+// Manual check against a real fastCRW server: prints the raw response shape and mapped results.
+// Usage: CRW_API_URL=http://crw.home:3000 [CRW_API_KEY=...] npm run smoke -- "query"
+import { resolveConfig } from "../src/config.ts"
+import { search } from "../src/search.ts"
+
+const config = resolveConfig({}, process.env)
+const query = process.argv[2] ?? "opencode"
+
+const headers: Record<string, string> = { "Content-Type": "application/json" }
+if (config.apiKey) headers.Authorization = `Bearer ${config.apiKey}`
+const raw = await fetch(`${config.baseURL}/v1/search`, {
+  method: "POST",
+  headers,
+  body: JSON.stringify({ query, limit: config.limit }),
+})
+const body: any = await raw.json().catch(() => undefined)
+console.log(
+  `HTTP ${raw.status}; data shape:`,
+  Array.isArray(body?.data) ? "data[]" : body?.data?.results ? "data.results" : "other",
+)
+
+console.log(await search(config, query, new AbortController().signal))

src/config.ts

@@ -0,0 +1,63 @@
+export type Config = {
+  baseURL: string
+  apiKey: string | undefined
+  limit: number
+  lang: string | undefined
+  tbs: string | undefined
+}
+
+const DEFAULT_BASE_URL = "http://localhost:3000"
+const DEFAULT_LIMIT = 8
+const TBS_VALUES = ["qdr:h", "qdr:d", "qdr:w", "qdr:m", "qdr:y"]
+
+// Blank strings count as unset so an empty env var does not shadow the default.
+function str(value: unknown, name: string, secret = false): string | undefined {
+  if (value === undefined || value === null) return undefined
+  if (typeof value !== "string") {
+    throw new Error(
+      `fastCRW: option ${name} must be a string${secret ? "" : `, got ${JSON.stringify(value)}`}`,
+    )
+  }
+  return value.trim() || undefined
+}
+
+function baseURL(value: string): string {
+  let url: URL
+  try {
+    url = new URL(value)
+  } catch {
+    throw new Error(`fastCRW: invalid baseURL ${JSON.stringify(value)} (expected an http(s) URL)`)
+  }
+  if (url.protocol !== "http:" && url.protocol !== "https:") {
+    throw new Error(`fastCRW: invalid baseURL ${JSON.stringify(value)} (expected an http(s) URL)`)
+  }
+  return value.replace(/\/+$/, "")
+}
+
+function limit(value: unknown): number {
+  const n = typeof value === "string" && value.trim() ? Number(value) : value
+  if (typeof n !== "number" || !Number.isFinite(n)) return DEFAULT_LIMIT
+  return Math.min(20, Math.max(1, Math.trunc(n)))
+}
+
+export function resolveConfig(
+  options: Record<string, unknown> | undefined,
+  env: Record<string, string | undefined>,
+): Config {
+  const opts = options ?? {}
+  const tbs = str(opts.tbs, "tbs")
+  if (tbs !== undefined && !TBS_VALUES.includes(tbs)) {
+    throw new Error(
+      `fastCRW: invalid tbs ${JSON.stringify(tbs)} (expected one of ${TBS_VALUES.join(", ")})`,
+    )
+  }
+  return {
+    baseURL: baseURL(
+      str(opts.baseURL, "baseURL") ?? str(env.CRW_API_URL, "CRW_API_URL") ?? DEFAULT_BASE_URL,
+    ),
+    apiKey: str(opts.apiKey, "apiKey", true) ?? str(env.CRW_API_KEY, "CRW_API_KEY", true),
+    limit: limit(opts.limit),
+    lang: str(opts.lang, "lang"),
+    tbs,
+  }
+}

src/index.ts

@@ -0,0 +1,19 @@
+import { Plugin } from "@opencode/plugin"
+import { resolveConfig } from "./config.ts"
+import { search } from "./search.ts"
+
+export default Plugin.define({
+  id: "fastcrw.websearch",
+  async setup(ctx) {
+    // Throws on bad options so a misconfigured plugin fails loudly instead of silently searching elsewhere.
+    const config = resolveConfig(ctx.options, process.env)
+    await ctx.websearch.transform((editor) => {
+      editor.add({
+        id: "fastcrw",
+        name: "fastCRW",
+        execute: ({ query }, { signal }) => search(config, query, signal),
+      })
+      editor.default.set("fastcrw")
+    })
+  },
+})

src/search.ts

@@ -0,0 +1,89 @@
+import type { Config } from "./config.ts"
+
+export type SearchResult = {
+  url: string
+  title: string
+  content: string
+  time: Record<string, never>
+}
+
+const TIMEOUT_MS = 30_000
+
+const str = (value: unknown) => (typeof value === "string" ? value : "")
+const isObject = (value: unknown): value is Record<string, unknown> =>
+  typeof value === "object" && value !== null
+
+function hint(status: number, code: string | undefined): string {
+  if (status === 401) return " (check apiKey or CRW_API_KEY)"
+  if (code === "search_disabled") return " (the server has no search backend configured)"
+  return ""
+}
+
+// Hosted fastCRW returns `data` as an array, self-hosted as `{ results: [...] }`.
+function items(data: unknown): unknown[] {
+  const list = isObject(data) && !Array.isArray(data) ? data.results : data
+  if (!Array.isArray(list)) throw new Error("fastCRW: unexpected response shape")
+  return list
+}
+
+export async function search(
+  config: Config,
+  query: string,
+  signal: AbortSignal,
+  fetchFn: typeof fetch = fetch,
+  timeoutMs = TIMEOUT_MS,
+): Promise<SearchResult[]> {
+  const timeout = AbortSignal.timeout(timeoutMs)
+  const headers: Record<string, string> = { "Content-Type": "application/json" }
+  if (config.apiKey) headers.Authorization = `Bearer ${config.apiKey}`
+
+  let res: Response
+  let text: string
+  try {
+    res = await fetchFn(`${config.baseURL}/v1/search`, {
+      method: "POST",
+      signal: AbortSignal.any([signal, timeout]),
+      headers,
+      body: JSON.stringify({
+        query,
+        limit: config.limit,
+        ...(config.lang && { lang: config.lang }),
+        ...(config.tbs && { tbs: config.tbs }),
+      }),
+    })
+    text = await res.text()
+  } catch (cause) {
+    if (signal.aborted) throw cause
+    if (timeout.aborted) throw new Error(`fastCRW: timed out after ${timeoutMs / 1000}s`, { cause })
+    throw new Error(`fastCRW: cannot reach ${config.baseURL}`, { cause })
+  }
+
+  let body: unknown
+  try {
+    body = JSON.parse(text)
+  } catch {
+    throw new Error(`fastCRW ${res.status}: non-JSON response: ${text.slice(0, 200)}`)
+  }
+  const parsed = isObject(body) ? body : {}
+
+  if (!res.ok || parsed.success === false) {
+    const code = str(parsed.error_code) || undefined
+    const message = str(parsed.error) || res.statusText || "request failed"
+    throw new Error(
+      `fastCRW ${res.status}${code ? ` ${code}` : ""}: ${message}${hint(res.status, code)}`,
+    )
+  }
+
+  return items(parsed.data).flatMap((item) => {
+    if (!isObject(item) || !str(item.url)) return []
+    const url = str(item.url)
+    return [
+      {
+        url,
+        title: str(item.title) || url,
+        content: str(item.snippet) || str(item.description),
+        time: {},
+      },
+    ]
+  })
+}

test/config.test.ts

@@ -0,0 +1,85 @@
+import assert from "node:assert/strict"
+import { test } from "node:test"
+import { resolveConfig } from "../src/config.ts"
+
+test("defaults", () => {
+  assert.deepEqual(resolveConfig({}, {}), {
+    baseURL: "http://localhost:3000",
+    apiKey: undefined,
+    limit: 8,
+    lang: undefined,
+    tbs: undefined,
+  })
+})
+
+test("undefined options use defaults", () => {
+  assert.equal(resolveConfig(undefined, {}).baseURL, "http://localhost:3000")
+})
+
+test("baseURL precedence: option > env > default", () => {
+  const env = { CRW_API_URL: "http://env:1" }
+  assert.equal(resolveConfig({ baseURL: "http://opt:2" }, env).baseURL, "http://opt:2")
+  assert.equal(resolveConfig({}, env).baseURL, "http://env:1")
+})
+
+test("baseURL is trimmed and loses trailing slashes", () => {
+  assert.equal(
+    resolveConfig({ baseURL: "  http://crw.home:3000//  " }, {}).baseURL,
+    "http://crw.home:3000",
+  )
+})
+
+test("blank baseURL option falls through to env", () => {
+  assert.equal(
+    resolveConfig({ baseURL: " " }, { CRW_API_URL: "http://env:1" }).baseURL,
+    "http://env:1",
+  )
+})
+
+test("invalid baseURL throws and names option and value", () => {
+  for (const bad of ["not a url", "ftp://host", 42]) {
+    assert.throws(() => resolveConfig({ baseURL: bad }, {}), /baseURL/)
+  }
+  assert.throws(() => resolveConfig({}, { CRW_API_URL: "nope" }), /baseURL.*nope/)
+})
+
+test("apiKey precedence: option > env; unset when absent or blank", () => {
+  assert.equal(resolveConfig({ apiKey: "a" }, { CRW_API_KEY: "b" }).apiKey, "a")
+  assert.equal(resolveConfig({}, { CRW_API_KEY: "b" }).apiKey, "b")
+  assert.equal(resolveConfig({}, { CRW_API_KEY: "" }).apiKey, undefined)
+  assert.equal(resolveConfig({ apiKey: " " }, {}).apiKey, undefined)
+})
+
+test("non-string apiKey throws without echoing the value", () => {
+  assert.throws(
+    () => resolveConfig({ apiKey: 12345 }, {}),
+    (err: Error) => /apiKey/.test(err.message) && !err.message.includes("12345"),
+  )
+})
+
+test("limit: clamps to 1..20, invalid falls back to 8, never throws", () => {
+  assert.equal(resolveConfig({ limit: 5 }, {}).limit, 5)
+  assert.equal(resolveConfig({ limit: 99 }, {}).limit, 20)
+  assert.equal(resolveConfig({ limit: 0 }, {}).limit, 1)
+  assert.equal(resolveConfig({ limit: -3 }, {}).limit, 1)
+  assert.equal(resolveConfig({ limit: "12" }, {}).limit, 12)
+  assert.equal(resolveConfig({ limit: 3.9 }, {}).limit, 3)
+  for (const bad of ["abc", NaN, null, {}, [], true]) {
+    assert.equal(resolveConfig({ limit: bad }, {}).limit, 8)
+  }
+})
+
+test("lang: string passes through, blank is unset, non-string throws", () => {
+  assert.equal(resolveConfig({ lang: "de" }, {}).lang, "de")
+  assert.equal(resolveConfig({ lang: "" }, {}).lang, undefined)
+  assert.throws(() => resolveConfig({ lang: 1 }, {}), /lang/)
+})
+
+test("tbs: allowed values pass, others throw", () => {
+  for (const ok of ["qdr:h", "qdr:d", "qdr:w", "qdr:m", "qdr:y"]) {
+    assert.equal(resolveConfig({ tbs: ok }, {}).tbs, ok)
+  }
+  assert.equal(resolveConfig({ tbs: "" }, {}).tbs, undefined)
+  assert.throws(() => resolveConfig({ tbs: "qdr:x" }, {}), /tbs.*qdr:x/)
+  assert.throws(() => resolveConfig({ tbs: 1 }, {}), /tbs/)
+})

test/index.test.ts

@@ -0,0 +1,59 @@
+import assert from "node:assert/strict"
+import { test } from "node:test"
+import plugin from "../src/index.ts"
+
+function fakeContext(options: Record<string, unknown>) {
+  const added: { id: string; name: string; execute: Function }[] = []
+  const defaults: unknown[] = []
+  const editor = {
+    add: (definition: (typeof added)[number]) => added.push(definition),
+    default: { get: () => undefined, set: (value: unknown) => defaults.push(value) },
+  }
+  const ctx = {
+    options,
+    websearch: { transform: async (fn: (e: typeof editor) => void) => fn(editor) },
+  }
+  return { ctx: ctx as never, added, defaults }
+}
+
+test("plugin id", () => {
+  assert.equal(plugin.id, "fastcrw.websearch")
+})
+
+test("setup registers the fastcrw provider and makes it the default", async () => {
+  const { ctx, added, defaults } = fakeContext({ baseURL: "http://crw.test:3000" })
+  await plugin.setup(ctx)
+  assert.equal(added.length, 1)
+  assert.equal(added[0].id, "fastcrw")
+  assert.equal(added[0].name, "fastCRW")
+  assert.deepEqual(defaults, ["fastcrw"])
+})
+
+test("setup throws on bad options and registers nothing", async () => {
+  const { ctx, added, defaults } = fakeContext({ baseURL: "nope" })
+  await assert.rejects(Promise.resolve(plugin.setup(ctx)), /baseURL/)
+  assert.equal(added.length + defaults.length, 0)
+})
+
+test("the registered provider searches the configured endpoint", async () => {
+  const { ctx, added } = fakeContext({ baseURL: "http://crw.test:3000", limit: 2 })
+  await plugin.setup(ctx)
+  const realFetch = globalThis.fetch
+  let seen = ""
+  globalThis.fetch = (async (url: string) => {
+    seen = url
+    return new Response(
+      JSON.stringify({ success: true, data: [{ url: "https://a", title: "A", snippet: "s" }] }),
+    )
+  }) as typeof fetch
+  try {
+    const results = await added[0].execute(
+      { query: "cats" },
+      { signal: new AbortController().signal },
+    )
+    assert.equal(seen, "http://crw.test:3000/v1/search")
+    assert.deepEqual(results, [{ url: "https://a", title: "A", content: "s", time: {} }])
+  } finally {
+    globalThis.fetch = realFetch
+  }
+})

test/release.test.ts

@@ -0,0 +1,131 @@
+import assert from "node:assert/strict"
+import { test } from "node:test"
+import {
+  encodeName,
+  ensureLinked,
+  ensureTag,
+  isPublished,
+  latestVersion,
+  publishBody,
+} from "../scripts/release.ts"
+
+const changelog = (body: string) => `# Changelog\n\n${body}\n`
+
+test("latestVersion picks the first released heading and skips Unreleased", () => {
+  const text = changelog(
+    "## [Unreleased]\n\n- wip\n\n## [1.2.0] - 2026-10-10\n\n## [1.1.0] - 2026-10-01\n",
+  )
+  assert.equal(latestVersion(text), "1.2.0")
+})
+
+test("latestVersion accepts prerelease versions", () => {
+  assert.equal(latestVersion(changelog("## [2.0.0-beta.1] - 2026-10-10")), "2.0.0-beta.1")
+})
+
+test("latestVersion throws when there is no release", () => {
+  assert.throws(() => latestVersion(changelog("## [Unreleased]\n\n- wip")), /no release/)
+})
+
+test("encodeName escapes the scope slash", () => {
+  assert.equal(encodeName("@haylan/opencode-fastcrw"), "@haylan%2Fopencode-fastcrw")
+})
+
+test("isPublished checks the versions map of a packument", () => {
+  assert.equal(isPublished({ versions: { "1.0.0": {} } }, "1.0.0"), true)
+  assert.equal(isPublished({ versions: { "1.0.0": {} } }, "1.1.0"), false)
+  assert.equal(isPublished({}, "1.0.0"), false)
+})
+
+test("publishBody builds the npm publish payload with the tarball attached", () => {
+  const pkg = { name: "@haylan/opencode-fastcrw", version: "1.0.0", description: "d" }
+  const tarball = Buffer.from("tarball-bytes")
+  const body = publishBody(pkg, tarball) as any
+  const file = "@haylan/opencode-fastcrw-1.0.0.tgz"
+  assert.equal(body._id, "@haylan/opencode-fastcrw")
+  assert.deepEqual(body["dist-tags"], { latest: "1.0.0" })
+  assert.equal(body.versions["1.0.0"]._id, "@haylan/opencode-fastcrw@1.0.0")
+  assert.match(body.versions["1.0.0"].dist.shasum, /^[0-9a-f]{40}$/)
+  assert.match(body.versions["1.0.0"].dist.integrity, /^sha512-/)
+  assert.equal(body._attachments[file].data, tarball.toString("base64"))
+  assert.equal(body._attachments[file].length, tarball.length)
+})
+
+// Fake Gitea API: each route answers with a status and optional JSON body; calls are recorded.
+function fakeApi(routes: Record<string, [number, unknown?]>) {
+  const calls: string[] = []
+  const fetchFn = (async (url: string, init?: RequestInit) => {
+    const key = `${init?.method ?? "GET"} ${url.replace("https://git.test/api/v1", "")}`
+    calls.push(key + (init?.body ? ` ${init.body}` : ""))
+    const [status, body] = routes[key] ?? [500, { message: `unexpected ${key}` }]
+    return new Response(JSON.stringify(body ?? {}), { status })
+  }) as typeof fetch
+  return {
+    calls,
+    api: { base: "https://git.test/api/v1", headers: { Authorization: "Bearer t" }, fetchFn },
+  }
+}
+
+test("ensureTag creates the tag when it does not exist", async () => {
+  const { calls, api } = fakeApi({
+    "GET /repos/haylan/r/tags/v1.0.0": [404],
+    "POST /repos/haylan/r/tags": [201],
+  })
+  assert.equal(await ensureTag(api, "haylan/r", "1.0.0", "abc123"), "created")
+  assert.deepEqual(JSON.parse(calls[1].replace("POST /repos/haylan/r/tags ", "")), {
+    tag_name: "v1.0.0",
+    target: "abc123",
+    message: "Release 1.0.0",
+  })
+})
+
+test("ensureTag leaves an existing tag alone", async () => {
+  const { calls, api } = fakeApi({ "GET /repos/haylan/r/tags/v1.0.0": [200, { name: "v1.0.0" }] })
+  assert.equal(await ensureTag(api, "haylan/r", "1.0.0", "abc123"), "exists")
+  assert.equal(calls.length, 1)
+})
+
+test("ensureTag throws on an unexpected API answer", async () => {
+  const { api } = fakeApi({ "GET /repos/haylan/r/tags/v1.0.0": [403, { message: "no" }] })
+  await assert.rejects(ensureTag(api, "haylan/r", "1.0.0", "abc"), /403/)
+})
+
+const pkgPath = "/packages/haylan/npm/%40haylan%2Fopencode-fastcrw"
+
+test("ensureLinked links an unlinked package to the repository", async () => {
+  const { calls, api } = fakeApi({
+    [`GET ${pkgPath}/1.0.0`]: [200, { repository: null }],
+    [`POST ${pkgPath}/-/link/r`]: [201],
+  })
+  assert.equal(
+    await ensureLinked(api, "haylan", "@haylan/opencode-fastcrw", "1.0.0", "r"),
+    "linked",
+  )
+  assert.equal(calls.length, 2)
+})
+
+test("ensureLinked skips a package that already has a repository", async () => {
+  const { calls, api } = fakeApi({
+    [`GET ${pkgPath}/1.0.0`]: [200, { repository: { full_name: "haylan/r" } }],
+  })
+  assert.equal(
+    await ensureLinked(api, "haylan", "@haylan/opencode-fastcrw", "1.0.0", "r"),
+    "already linked",
+  )
+  assert.equal(calls.length, 1)
+})
+
+test("ensureLinked throws when the package lookup or link fails", async () => {
+  const lookup = fakeApi({ [`GET ${pkgPath}/1.0.0`]: [404] })
+  await assert.rejects(
+    ensureLinked(lookup.api, "haylan", "@haylan/opencode-fastcrw", "1.0.0", "r"),
+    /404/,
+  )
+  const link = fakeApi({
+    [`GET ${pkgPath}/1.0.0`]: [200, {}],
+    [`POST ${pkgPath}/-/link/r`]: [403],
+  })
+  await assert.rejects(
+    ensureLinked(link.api, "haylan", "@haylan/opencode-fastcrw", "1.0.0", "r"),
+    /403/,
+  )
+})

test/search.test.ts

@@ -0,0 +1,160 @@
+import assert from "node:assert/strict"
+import { test } from "node:test"
+import type { Config } from "../src/config.ts"
+import { search } from "../src/search.ts"
+
+const config: Config = {
+  baseURL: "http://crw.test:3000",
+  apiKey: undefined,
+  limit: 8,
+  lang: undefined,
+  tbs: undefined,
+}
+const signal = new AbortController().signal
+
+type Call = { url: string; init: RequestInit }
+function respond(body: unknown, status = 200) {
+  const calls: Call[] = []
+  const fetchFn = (async (url: string, init: RequestInit) => {
+    calls.push({ url, init })
+    return new Response(typeof body === "string" ? body : JSON.stringify(body), { status })
+  }) as typeof fetch
+  return { calls, fetchFn }
+}
+const ok = (data: unknown) => ({ success: true, data })
+
+test("sends POST /v1/search with JSON body and no auth header by default", async () => {
+  const { calls, fetchFn } = respond(ok([]))
+  await search(config, "cats", signal, fetchFn)
+  assert.equal(calls[0].url, "http://crw.test:3000/v1/search")
+  assert.equal(calls[0].init.method, "POST")
+  const headers = calls[0].init.headers as Record<string, string>
+  assert.equal(headers["Content-Type"], "application/json")
+  assert.equal("Authorization" in headers, false)
+  assert.deepEqual(JSON.parse(calls[0].init.body as string), { query: "cats", limit: 8 })
+})
+
+test("sends Bearer token, lang and tbs when configured", async () => {
+  const { calls, fetchFn } = respond(ok([]))
+  await search({ ...config, apiKey: "k", lang: "de", tbs: "qdr:w", limit: 3 }, "q", signal, fetchFn)
+  const headers = calls[0].init.headers as Record<string, string>
+  assert.equal(headers.Authorization, "Bearer k")
+  assert.deepEqual(JSON.parse(calls[0].init.body as string), {
+    query: "q",
+    limit: 3,
+    lang: "de",
+    tbs: "qdr:w",
+  })
+})
+
+test("maps a flat data array", async () => {
+  const { fetchFn } = respond(
+    ok([{ url: "https://a", title: "A", snippet: "s", description: "d" }]),
+  )
+  assert.deepEqual(await search(config, "q", signal, fetchFn), [
+    { url: "https://a", title: "A", content: "s", time: {} },
+  ])
+})
+
+test("maps data.results and falls back to description", async () => {
+  const { fetchFn } = respond(ok({ results: [{ url: "https://a", title: "A", description: "d" }] }))
+  const [r] = await search(config, "q", signal, fetchFn)
+  assert.equal(r.content, "d")
+})
+
+test("drops entries without a url, falls back to url for title, empty content", async () => {
+  const { fetchFn } = respond(ok([{ title: "no url" }, null, { url: "https://b" }]))
+  assert.deepEqual(await search(config, "q", signal, fetchFn), [
+    { url: "https://b", title: "https://b", content: "", time: {} },
+  ])
+})
+
+test("empty results return []", async () => {
+  assert.deepEqual(await search(config, "q", signal, respond(ok([])).fetchFn), [])
+  assert.deepEqual(await search(config, "q", signal, respond(ok({ results: [] })).fetchFn), [])
+})
+
+test("unexpected shape throws", async () => {
+  for (const data of [{ web: [] }, "x", null]) {
+    await assert.rejects(
+      search(config, "q", signal, respond(ok(data)).fetchFn),
+      /unexpected response shape/,
+    )
+  }
+})
+
+test("API error keeps status and code", async () => {
+  const body = { success: false, error: "slow down", error_code: "rate_limited" }
+  await assert.rejects(search(config, "q", signal, respond(body, 429).fetchFn), {
+    message: "fastCRW 429 rate_limited: slow down",
+  })
+})
+
+test("503 search_disabled and 401 carry a hint", async () => {
+  await assert.rejects(
+    search(
+      config,
+      "q",
+      signal,
+      respond({ success: false, error: "off", error_code: "search_disabled" }, 503).fetchFn,
+    ),
+    /fastCRW 503 search_disabled: off .*no search backend configured/,
+  )
+  await assert.rejects(
+    search(config, "q", signal, respond({ success: false, error: "Invalid API key" }, 401).fetchFn),
+    /fastCRW 401: Invalid API key .*check apiKey or CRW_API_KEY/,
+  )
+})
+
+test("HTTP 200 with success:false is an error with status 200", async () => {
+  const body = { success: false, error: "search failed", error_code: "http_error" }
+  await assert.rejects(search(config, "q", signal, respond(body, 200).fetchFn), {
+    message: "fastCRW 200 http_error: search failed",
+  })
+})
+
+test("errors never include the token", async () => {
+  const body = { success: false, error: "bad", error_code: "invalid_request" }
+  await assert.rejects(
+    search({ ...config, apiKey: "SECRET" }, "q", signal, respond(body, 400).fetchFn),
+    (err: Error) => !err.message.includes("SECRET"),
+  )
+})
+
+test("non-JSON body reports status and the first 200 chars", async () => {
+  const html = "<html>" + "x".repeat(500)
+  await assert.rejects(
+    search(config, "q", signal, respond(html, 502).fetchFn),
+    (err: Error) =>
+      err.message.startsWith("fastCRW 502: non-JSON response") && err.message.length < 260,
+  )
+})
+
+test("network failure names the baseURL and keeps the cause", async () => {
+  const cause = new TypeError("fetch failed")
+  const fetchFn = (async () => {
+    throw cause
+  }) as typeof fetch
+  await assert.rejects(search(config, "q", signal, fetchFn), (err: Error) => {
+    assert.equal(err.message, "fastCRW: cannot reach http://crw.test:3000")
+    assert.equal(err.cause, cause)
+    return true
+  })
+})
+
+// A fetch that never answers and rejects with the signal's reason, like the real one.
+const hang = ((_url: string, init: RequestInit) =>
+  new Promise((_resolve, reject) => {
+    init.signal!.addEventListener("abort", () => reject(init.signal!.reason))
+  })) as typeof fetch
+
+test("caller abort is rethrown untouched", async () => {
+  const controller = new AbortController()
+  const pending = search(config, "q", controller.signal, hang)
+  controller.abort()
+  await assert.rejects(pending, (err) => err === controller.signal.reason)
+})
+
+test("internal timeout aborts the request", async () => {
+  await assert.rejects(search(config, "q", signal, hang, 20), /timed out/)
+})

tsconfig.json

@@ -0,0 +1,15 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "strict": true,
+    "declaration": true,
+    "outDir": "dist",
+    "rootDir": "src",
+    "types": ["node"],
+    "skipLibCheck": true,
+    "rewriteRelativeImportExtensions": true
+  },
+  "include": ["src"]
+}