refactor!: simplify runtime tools and remove replay engines (#572)

* fix(hopper): report unavailable procedure body coverage

* refactor!: simplify runtime tools and remove replay engines

Keep direct inspection, capture, and comparison tools. Bind handlers to named contracts and let agents compose experiments with commands and local fixture servers.

BREAKING CHANGE: Remove controlled replay, Node characterization, finite replay-machine, managed runtime planning, and redundant string-tracing tools. Retire process replay, shims, reactive scenarios, custom checkpoints, and active browser replay and origin-scope inputs.

.github/workflows/real-javascript-replay.yml

@@ -1,40 +0,0 @@
-name: Real JavaScript replay verification
-
-on:
-  pull_request:
-    paths:
-      - ".github/workflows/real-javascript-replay.yml"
-      - "scripts/verify-real-javascript-replay.mjs"
-      - "src/replay/**"
-      - "src/application/JavaScriptReplay*"
-      - "src/domain/javascriptReplay.ts"
-      - "tests/fixtures/replay/**"
-      - "package.json"
-      - "package-lock.json"
-  workflow_dispatch:
-
-concurrency:
-  group: real-replay-${{ github.event.pull_request.number || github.ref }}
-  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
-
-env:
-  HUSKY: "0"
-
-permissions:
-  contents: read
-
-jobs:
-  real-replay:
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: .nvmrc
-          cache: npm
-      - run: npm ci
-      - run: sudo apt-get update && sudo apt-get install -y bubblewrap
-      - run: npm run verify:replay
-        env:
-          REA_REPLAY_ALLOW_UNAVAILABLE: "true"