fix(version): sync across viewer + README, drop historical union

[rohitg00]

Summary

Three drift bugs across version displays:

1. Viewer brand badge — src/viewer/index.html:793 hardcoded v0.7.0. Two releases stale.
2. README "New in" banner — README.md:158 still said v0.8.2. Package is 0.9.0.
3. src/version.ts literal union — listed every historical version ("0.3.0" | "0.4.0" | ... | "0.9.0") with no runtime purpose. Regenerated on every release.

Fix

• src/version.ts → single literal: export const VERSION = "0.9.0";. Export-import still validates against its own supportedVersions Set, which is the actual compat contract.
• src/viewer/index.html → placeholder __AGENTMEMORY_VERSION__.
• src/viewer/document.ts → substitute VERSION at render time. Same mechanism as the existing CSP nonce — one .replaceAll call.
• README.md → banner rewritten for v0.9.0 with link to CHANGELOG section.

Scope note

User screenshot showed V0.0.0 in the website hero. Live check of https://www.agent-memory.dev/ returns v0.9.0 correctly, so the website path is already wired via website/lib/meta.ts (#167). The screenshot was likely a cached/preview deploy. Not addressing website code in this PR.

Test plan

• npm run build — clean, viewer template emitted with placeholder
• npm test — 777 pass
• Verified dist/viewer/index.html contains placeholder and no hardcoded v0.7.0
• Manual: start server, hit http://localhost:3113, confirm brand reads v0.9.0

Summary by CodeRabbit

• Documentation

  • Updated release notes to v0.9.0 with new feature highlights including filesystem connector support and improved MCP standalone behavior.

• Chores

  • Version bumped to v0.9.0.
  • Viewer now displays dynamically injected version information instead of hardcoded version.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
agentmemory	Ready	Preview, Comment	Apr 20, 2026 9:12pm

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: cde3bdf5-c873-42f2-bfe3-b10fd6b9ba05

📥 Commits

Reviewing files that changed from the base of the PR and between 4f8c4ca and ca626f3.

📒 Files selected for processing (4)

• README.md
• src/version.ts
• src/viewer/document.ts
• src/viewer/index.html

---

📝 Walkthrough

Walkthrough

This PR bumps the project version to v0.9.0 and implements dynamic version injection in the viewer. The VERSION constant type constraint is simplified, README release notes are updated, and the viewer template now uses a build-time placeholder for its version display rather than a hardcoded value.

Changes

Cohort / File(s)	Summary
Version Bump & Configuration README.md, src/version.ts	Updated version callout to v0.9.0 with new feature highlights; simplified VERSION constant by removing union type constraint.
Viewer Version Injection src/viewer/document.ts, src/viewer/index.html	Introduced build-time version placeholder substitution in viewer rendering; replaced hardcoded version string in HTML template with __AGENTMEMORY_VERSION__ placeholder for runtime injection.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• chore: release v0.9.0 #165: Modifies version handling in src/version.ts and implements viewer template version injection—directly overlaps with this PR's dual focus on version constants and viewer version placeholders.
• fix: ship iii-config.docker.yaml in the npm tarball (#136) #137: Updates the exported VERSION constant in src/version.ts similar to this PR.
• chore: release 0.8.5 #133: Changes src/version.ts VERSION value and type declarations in parallel with this PR's version updates.

Poem

🐰 A version hops forth, from old to anew,
No longer shackled by type constraints true,
The viewer now whispers its age through the air,
Injected with grace at the build-time fair! 🌟

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and specifically summarizes the main changes: version synchronization across multiple files and removal of an unnecessary historical union type.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/version-sync

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}