chore: replace main's tree with v2

Phase 4 of the v2 go-live runbook (#1804 §5). `main` becomes the v2 tree while
keeping its own history: this is a true merge recording `v2/main` as a second
parent, not a reset, so no force-push is needed and the default branch's
history and PR trail survive intact.

Mechanically: `-s ours` to take no tree from the merge, then the index is
replaced wholesale with `v2/main`'s. `git diff HEAD origin/v2/main` is empty
afterwards.

Note the runbook's command needed one addition — `main` and `v2/main` have
genuinely unrelated histories (different root commits, no merge base), so
`--allow-unrelated-histories` is required or the merge refuses outright.

All 125 open PRs previously targeting `main` were re-pointed at `v1/main`
first, so none of them are stranded against a tree that no longer exists.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Txmv2qqv3yeKgRzoqXytzD

Author: cliffhall

.claude/settings.json

@@ -0,0 +1,5 @@
+{
+  "enabledPlugins": {
+    "playwright@claude-plugins-official": true
+  }
+}

.dockerignore

@@ -1,35 +1,38 @@
-# Version control
+# Keep the build context small and force a clean, in-container install/build.
+# Host node_modules and build outputs are excluded so nothing stale or
+# wrong-architecture is copied in — the builder stage runs its own
+# `npm install && npm pack`.
+
 .git
-.gitignore
+.github
 
-# Node.js
+# Installed deps (root + every client) — reinstalled in the image
 node_modules
-npm-debug.log
+clients/*/node_modules
+test-servers/node_modules
 
-# Build artifacts
-client/dist
-client/build
-server/dist
-server/build
+# Build outputs — rebuilt in the image
+clients/*/build
+clients/web/dist
+test-servers/build
+storybook-static
+coverage
 
-# Environment variables
-.env
-.env.local
-.env.development
-.env.test
-.env.production
+# Docs/specs aren't referenced by the build — trim them from the context.
+# (test-servers/ stays: `tsc -b` typechecks the integration tests that import
+# the `@modelcontextprotocol/inspector-test-server` alias.)
+specification
+docs
 
-# Editor files
+# Packed tarballs (the image makes its own)
+*.tgz
+
+# Local / editor / env
+.env
+.env.*
+.DS_Store
 .vscode
 .idea
-
-# Logs
-logs
+.claude
+.playwright-mcp
 *.log
-
-# Testing
-coverage
-
-# Docker
-Dockerfile
-.dockerignore

.git-blame-ignore-revs

@@ -1,57 +1,34 @@
-## Summary
-
-<!-- Provide a brief description of what this PR does -->
-
-> **Note:** Inspector V2 is under development to address architectural and UX improvements. During this time, V1 contributions should focus on **bug fixes and MCP spec compliance**. See [CONTRIBUTING.md](../CONTRIBUTING.md) for more details.
-
-## Type of Change
-
-<!-- Mark the relevant option with an "x" -->
-
-- [ ] Bug fix (non-breaking change that fixes an issue)
-- [ ] New feature (non-breaking change that adds functionality)
-- [ ] Documentation update
-- [ ] Refactoring (no functional changes)
-- [ ] Test updates
-- [ ] Build/CI improvements
-
-## Changes Made
-
-<!-- Describe the changes in detail. Include screenshots/recordings if applicable -->
-
-## Related Issues
-
-<!-- Link to related issues using #issue_number or "Fixes #issue_number" -->
-
-## Testing
-
-<!-- Describe how you tested these changes, where applicable -->
-
-- [ ] Tested in UI mode
-- [ ] Tested in CLI mode
-- [ ] Tested with STDIO transport
-- [ ] Tested with SSE transport
-- [ ] Tested with Streamable HTTP transport
-- [ ] Added/updated automated tests
-- [ ] Manual testing performed
-
-### Test Results and/or Instructions
-
-<!-- Provide steps for reviewers to test your changes -->
-
-Screenshots are encouraged to share your testing results for this change.
-
-## Checklist
-
-- [ ] Code follows the style guidelines (ran `npm run prettier-fix`)
-- [ ] Self-review completed
-- [ ] Code is commented where necessary
-- [ ] Documentation updated (README, comments, etc.)
-
-## Breaking Changes
-
-<!-- If this is a breaking change, describe the impact and migration path -->
-
-## Additional Context
-
-<!-- Add any other context, screenshots, or information about the PR here -->
+<!--
+  ⚠️ Before you open this pull request, please read our contribution policy.
+
+  We accept ISSUES, NOT PULL REQUESTS from external contributors.
+
+  Design and implementation are done by the maintainers through a
+  prompt-driven workflow (see AGENTS.md). External source PRs will not be
+  merged — they have to be reverse-engineered to fit our component/theme
+  conventions and coverage gates, so it's faster for us to re-derive the
+  change from your intent.
+
+  If you've found a bug or want a feature:
+    → Open an issue instead, labeled for the version you're targeting
+      (`v1` for `v1/main`, `v2` for `main`).
+
+  If you've already built the change locally:
+    → Open an issue and share the PROMPT(S) you used to generate it, not a
+      diff. We'll reproduce it through our own workflow.
+
+  Full policy: https://github.com/modelcontextprotocol/inspector/blob/main/CONTRIBUTORS.md
+
+  Maintainers: delete this template body and describe your change normally.
+-->
+
+> **Heads up:** this repository accepts **issues, not pull requests** from
+> external contributors. Please read [`CONTRIBUTORS.md`](../blob/main/CONTRIBUTORS.md)
+> before continuing. If you're an external contributor, open an issue (and
+> share the prompt you used, if you've already built the change) rather than
+> this PR.
+>
+> Want to work on the Inspector with us directly? Come say hello in
+> **`#inspector-dev`** on the
+> [MCP Contributor Discord](https://discord.gg/6CSzBmMkjX) — we're happy to
+> scope work with you.