docs: correct variants, plan mode, sqlite self-heal

Align docs with rc.2: variants are per reasoning/effort level (boolean
params collapse to one on-variant), no synthetic plan variant; document
plan agent → Cursor plan mode; add sqlite binding self-heal and stale
plugin-cache troubleshooting; add the rc.2 changelog entry.

Author: justin-carper

CHANGELOG.md

@@ -4,6 +4,29 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+- `0.1.0-rc.2` — pre-release on the npm `next` dist-tag. Fixes found while
+  validating rc.1 against opencode 1.16.2:
+  - **Plugin now loads when installed by package name.** Added the
+    `exports["./server"]` entry opencode uses to resolve a plugin's entrypoint;
+    rc.1 exposed the plugin only at `./plugin`, which opencode does not read, so
+    the package installed but registered no hooks (no provider, no models).
+  - **Self-heal the `sqlite3` native binding.** opencode installs plugins with
+    Bun, which skips sqlite3's install script, so `@cursor/sdk`'s
+    `require("sqlite3")` failed with "Could not locate the bindings file". The
+    plugin now runs sqlite3's `prebuild-install -r napi` under the system Node
+    before loading the SDK (once per process, never throws).
+  - **Stream ordering.** The final answer no longer renders above the reasoning
+    blocks that preceded it — the open text part is closed when reasoning
+    resumes and each resume opens a fresh text part.
+  - **Model variants reach the picker.** Variants are seeded on the
+    config-injected models (opencode discards the `provider.models()` hook for
+    providers outside its models.dev catalog). Variant naming reworked against
+    the real catalog: boolean params (e.g. `thinking`) collapse to one
+    param-named variant instead of literal `true`/`false`; enum params key by
+    value. The synthetic `plan` variant was removed.
+  - **Plan agent → Cursor plan mode.** opencode's plan agent (`Tab`) is mapped
+    to Cursor's plan mode via the `chat.params` hook; an explicit variant/option
+    mode still wins.
 - `0.1.0-rc.1` — first pre-release of the 0.1.0 surface below, published to the
   npm `next` dist-tag for validation ahead of the stable `0.1.0`.
 
@@ -21,8 +44,9 @@ and a permission-gated delegation tool surface.
   tool activity, usage). Implements both `doStream()` and `doGenerate()`.
 - **Per-request controls** via `providerOptions.cursor` — `mode` (agent/plan),
   `params`, and `thinking` level; works with opencode's model variant picker.
-- **Model variants** auto-generated from `Cursor.models.list` parameters: a
-  `plan` variant plus one per reasoning level a model advertises.
+- **Model variants** auto-generated from `Cursor.models.list` parameters: one
+  per reasoning/effort level a model advertises (boolean params collapse to a
+  single on-variant). opencode's plan agent maps to Cursor plan mode.
 - **Session reuse** (`session: true`) — keeps one Cursor agent per opencode
   session via `Agent.resume()` across turns, with automatic fallback to a fresh
   agent. A run wedged by a crashed/duplicate process is recovered by retrying
@@ -56,7 +80,8 @@ and a permission-gated delegation tool surface.
 
 ### Plugin
 
-- **opencode plugin** (`@stablekernel/opencode-cursor/plugin`): auth hook (API-key login;
+- **opencode plugin** (`@stablekernel/opencode-cursor`, resolved via the package's
+  `./server` export): auth hook (API-key login;
   the key is validated on first use rather than at login), config hook
   (auto-injects `provider.cursor`),
   `provider.models()` (live catalog via `Cursor.models.list`), and the

README.md

@@ -156,10 +156,19 @@ opencode delivers per-request, provider-specific settings to the model under
 - `params` → `{ <paramId>: value }` mapped to Cursor `ModelSelection.params`
 - `thinking` → convenience, mapped to the `thinking` param
 
-These are most naturally driven by opencode's **model variant picker**: the plugin auto-generates a
-`plan` variant plus one variant per reasoning/thinking value the model advertises
-(`Cursor.models.list()` parameters). Selecting a variant sends its settings through
-`providerOptions.cursor`. You can also set them statically per model:
+These are most naturally driven by opencode's **model variant picker**: the plugin auto-generates
+one variant per reasoning/effort level a model advertises (`Cursor.models.list()` parameters). A
+boolean parameter (e.g. `thinking: ["false","true"]`) collapses to a single variant named after the
+parameter that switches it on (the off state is the default — no variant selected); enum parameters
+(e.g. `effort`, `reasoning`) produce one variant per value. Selecting a variant sends its settings
+through `providerOptions.cursor`.
+
+> **Plan mode is not a variant.** opencode's **plan agent** (toggled with `Tab`) is mapped to
+> Cursor's plan mode automatically by the plugin's `chat.params` hook, so switching opencode into
+> plan mode puts the Cursor agent into plan mode too. An explicit `mode` from a selected variant or
+> model option still wins.
+
+You can also set controls statically per model:
 
 ```json
 { "provider": { "cursor": { "models": {
@@ -336,6 +345,17 @@ Enable blocks mode in your opencode config:
   with `OPENCODE_CURSOR_SIDECAR=1`.
 - **"Running under Bun without a usable Node sidecar" warning.** Install Node.js 22+, or set
   `OPENCODE_CURSOR_SIDECAR=0` to accept in-process behavior and silence the warning.
+- **"Could not locate the bindings file" / `node_sqlite3.node` not found.** `@cursor/sdk` depends on
+  the native `sqlite3` addon, and opencode installs plugins with Bun, which skips sqlite3's install
+  script — so the prebuilt binary may be missing. The plugin detects this and self-heals on first SDK
+  load by running sqlite3's own `prebuild-install -r napi` under your system Node (requires Node on
+  `PATH`). If it can't (no Node, offline), it logs a one-line manual fix: `cd` into the printed
+  sqlite3 directory and run `npx prebuild-install -r napi` (or `npm rebuild sqlite3`). Set
+  `OPENCODE_CURSOR_DEBUG=1` to see the repair output.
+- **Plugin looks enabled but no `cursor` provider/models appear.** opencode caches a plugin by its
+  install spec under `~/.cache/opencode/packages/`; a stale cache from an older version can persist.
+  Pin an exact version (`@stablekernel/opencode-cursor@<version>`) or delete the cached dir and
+  restart so opencode reinstalls.
 - **Only the four fallback models appear in the picker.** The live catalog loads after the first
   authenticated use — restart opencode once after logging in, or run `cursor_refresh_models` to
   force a refresh.