docs(ado-script): fix garbled text and bundle drift in ado-script.md

[github-actions]

Agent Documentation Update

Findings

Area	Issue	File(s)
accuracy	Garbled/corrupted sentence "before the ****** REST or git" (asterisks in place of a word) in the prepare-pr-base.js description, obscuring the actual behavior	docs/ado-script.md
accuracy	Prose claimed import.js ships alongside "the ten exec-context-*.js bundles", but scripts/ado-script/src/ only contains nine exec-context-* directories (pr, pr-synth, manual, pipeline, ci-push, workitem, schedule, pr-checks, repo)	docs/ado-script.md
accuracy	The Workspace layout tree and the release-workflow bundle enumeration omitted the ado-proxy/ and azure-wif-refresh/ source directories and their .js outputs, even though both are separately documented bundles (ado-proxy.js, azure-wif-refresh.js) built by npm run build and shipped in ado-script.zip per scripts/ado-script/package.json and .github/workflows/release.yml	docs/ado-script.md

Applied Fixes

• Replaced the garbled ****** REST or git fragment with the correct wording ("before attempting REST or git"), verified against the remote-identity check in scripts/ado-script/src/prepare-pr-base/index.ts
• Corrected the exec-context bundle count from "ten" to "nine", verified by counting exec-context-* directories under scripts/ado-script/src/
• Added ado-proxy/ and azure-wif-refresh/ entries to the workspace-layout tree (source files, .js outputs) and to the release-workflow bundle-enumeration prose, so the tree matches the actual directory contents and package.json build script list

Notes

Verified each claim directly against source: scripts/ado-script/src/ directory listing, scripts/ado-script/package.json build scripts, .github/workflows/release.yml bundling step, and scripts/ado-script/src/prepare-pr-base/index.ts remote-matching logic. No other drift found in docs/ado-script.md; other agent-doc areas audited (CLI commands, front-matter fields, safe-outputs, codemods, runtimes, tools, network ecosystem identifiers, CompilerExtension trait, prompts/*.md) were already accurate or already covered by other open PRs (e.g. #2145 for copilot-vendor, #2144 for topology-attach, several open PRs for container_runtime.rs in the AGENTS.md tree).

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