chore(release): graduation polish for 0.1.0 stable

[0xSolace]

Summary

Graduation polish for @0xsolace/plugin-acpx 0.1.0 stable.

• Bumps package metadata from 0.1.0-rc.1 to 0.1.0 and completes npm publish metadata.
• Replaces the stub changelog with categorized 0.1.0 features, architecture notes, and production validation receipts.
• Refreshes README and PROJECT.md around the product frame: Eliza is the IDE, not the code agent.
• Documents install/usage, the acpx binary story, environment variables, failure modes, persistence, and parallel-session usage.
• Adds Biome config so bunx @biomejs/biome check . checks the intended package surface and excludes .research, dist, and node_modules.
• Makes the unit suite stable under bun test by avoiding Vitest APIs Bun does not implement and isolating shared action test state.
• Applies Biome formatting to tracked source/test files.

Production receipts

Validated on 2026-05-06 with Nyx running three parallel acpx-spawned codex subagents that each deployed a real Cloudflare Worker cleanly:

• nebula-callsign-forge-demo
• embermark-night-signal
• aurora-pocket

This is the strongest current receipt for concurrent spawn, structured event streaming, completion handling, and deployment workflow readiness.

Checks

bun test
# 38 pass, 0 fail, 116 expect() calls

bun run build
# $ tsc -p tsconfig.build.json
# exit 0

bunx @biomejs/biome check .
# Checked 29 files in 36ms. No fixes applied.

Notes

• No npm publish performed.
• No feature work added, this is release readiness polish only.
• Codex review was run with codex exec -s danger-full-access review --base origin/main; it reported no actionable correctness issues.