Update deps, versioning, and release workflow for v2 dist-tag

[frap129]

Question

Update package metadata and CI for the v2 line, on the v2 branch:

• devDeps: @opencode-ai/plugin@beta, @opencode-ai/sdk@beta (or migrate to @opencode-ai/client@beta as the delivery engine requires), plus peer deps the v2 plugin pulls in (effect, zod, @opencode-ai/ai if required at runtime).
• peerDependencies: target the v2 beta line (0.0.0-beta-*); tighten at GA.
• Version: 2.0.0-beta.x (start at 2.0.0-beta.1).
• CI/release workflow: stable publishes trigger on non-alpha/non-beta v* tags; beta tags publish with npm dist-tag. Add/verify a v2 dist-tag publish path (not beta — v1 users tracking beta must not receive v2 builds). Verify the workflow's "beta contained by dev" rule doesn't break: v2 branch work flows through v2, not dev.
• Check whether the files/exports map needs changes (e.g. if test seams move out of src/index.ts, keep __testOnly-replacement out of the published surface; .opencode/plugin/ + .opencode/plugins/ both discovered in v2 — README install docs should say plugins).

[frap129]

Resolution

All work done on the v2 branch working tree (uncommitted; folds into the branch's pending v2 port work).

package.json

• Version: 2.0.0-beta.1.
• Removed oc-plugin field (v1-only discovery hint). Verified against the v2 docs publish manifests (plugins + CLI plugins pages): v2 package plugins are discovered via exports (. server, ./tui CLI) — the field is dead weight under v2.
• Removed @opencode-ai/sdk (dev + peer): zero imports in src//tui/; the v2 plugin context IS the client, consumed through the structural OpenCodeClient port in src/runtime/client-adapter.ts. The ticket's @opencode-ai/client migration option is unnecessary — there is no direct SDK/client import to migrate.
• effect, zod, @opencode-ai/ai NOT added: they are transitive dependencies of @opencode-ai/plugin@beta itself (verified via npm view @opencode-ai/plugin@beta dependencies), not required by any direct import of ours. Plugin consumers resolve them through the plugin package.
• peerDependencies: @opencode-ai/plugin → >=0.0.0-beta-18999 <0.0.1. The ticket's literal 0.0.0-beta-* is not a valid semver range — semver.validRange('0.0.0-beta-*') normalizes to 0.0.0-beta- which satisfies nothing (verified with node-semver 7 against beta-18999/19086/99999: all false). The chosen range matches exactly the beta line and excludes any post-0.0.0 stable. devDep stays pinned exact 0.0.0-beta-18999 (caret mis-resolves prereleases, per the Port server entry + orchestrator to v2 plugin contract #71 decision).

Release workflows

• release-beta.yml: publishes npm publish --access public --tag v2 (was beta); branch-containment check now origin/(dev|v2) so v2 tags satisfy the rule. The v1 beta dist-tag stays frozen for v1 users.
• release.yml (stable/latest): condition now also excludes -rc, so no v2 prerelease shape can ever reach latest even if a -rc tag is used later.

README

• Install docs: opencode plugin opencode-rules@v2 --global; manual config uses the v2 plugins key, TUI sidebar entry documents cli.json with plugins (per v2 CLI-plugins docs: "plugins": ["opencode-acme-plugin"] in cli.json).
• Beta Channel section rewritten as the v2 line: v2 branch → v2 dist-tag, explicit warning that v1 beta trackers are unaffected.
• Publishing docs: v2 beta cut procedure (bump 2.0.0-beta.x, tag v2.0.0-beta.x, push v2 --tags, containment dev/v2).
• TUI sidebar section: slot name and requirements updated to v2.
• Tech stack: plugin framework entry now says v2 beta.

AGENTS.md

• Releases section and the npm-spec-cache gotcha updated for the v2 dist-tag.

files/exports audit

• files and exports maps needed no changes: . and ./tui already point at built dist/ targets; pack dry-run confirms no SDK, test, fixture, or typecheck files in the tarball, and the test seam (src/runtime/create-runtime.ts) is source-only, never a named export of the entry.

Verification

• aube install (lockfile re-resolved; frozen install passes), aube run lint clean, aubx tsc --noEmit clean, aube run test:run 548/548 across 35 files, aube run build succeeds, bun pm pack --dry-run → opencode-rules-2.0.0-beta.1.tgz, 258 files, zero sdk/test/fixture entries.