feat: declare input schemas for the selector-taking agent tools

[erkamyaman]

Stacked on #1, which repairs the build. The last commit is the only one specific to this PR.

ng-devtools_highlight, _inspect-signals and _inspect-providers each advertise no parameters:

"inputSchema": { "type": "object", "properties": {} }

while all three handlers read args.selector. An MCP client has no way to discover the argument, and a wrong guess fails silently:

tools/call ng-devtools_highlight {"componentSelector": "app-root"}
-> "Highlighted `undefined` in the page overlay."

Added a raw inputSchema to each. Verified over stdio that tools/list now advertises selector as required and the handler receives it.

Used inputSchema rather than the preferred args, because args advertises positional arg0 and passes the payload through unchanged, so handlers reading args.selector would break. valibot also exposes no ~standard.jsonSchema, so args would degrade to {type: "object", additionalProperties: true} and lose the description.

Two other things I ran into while testing the MCP server, not fixed here:

• get-routes, get-components, get-signals and get-providers fail every tools/call with -32602, because they return v.array(...) and devframe advertises an object outputSchema for it. Fix submitted upstream as fix(agentic): do not advertise an output schema devframe cannot derive devframes/devframe#400.
• inspect-signals / inspect-providers always return {} rather than their "No signal graph available" fallback. my.rpc.broadcast is Promise<void> and never rejects, so the catch is unreachable. Happy to open a separate PR if you want a particular shape for it.

Summary by CodeRabbit

• New Features

  • DevTools agent tools now define and validate their expected selector input, improving reliability when highlighting elements and inspecting signals or providers.

• Bug Fixes

  • Improved compatibility for development tooling imports and build output.
  • Updated application test coverage to verify navigation links and routing behavior.

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📝 Walkthrough

Walkthrough

The change adds cac, enables TypeScript extension rewriting, adds required selector schemas to three agent tools, and updates the application test to provide a router and verify navigation links.

Changes

Tooling and application updates

Layer / File(s)	Summary
Build and import configuration packages/ng-devtools/package.json, tsconfig.app.json, packages/ng-devtools/src/devframe.ts	The package adds cac. The compiler allows .ts imports and rewrites relative extensions during emit. RPC and type imports use .ts extensions.
Agent tool input contracts packages/ng-devtools/src/devframe.ts	ng-devtools:highlight, ng-devtools:inspect-signals, and ng-devtools:inspect-providers require a string selector input.
Application routing test src/app/app.spec.ts	The test provides an empty router and verifies that navigation links have href values / and /about.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~15 minutes

Change: Feature

Suggested labels: enhancement

Suggested reviewers: santoshyadavdev

Merge Risk: 🟡 Moderate · up to 08477

The updated application tests can fail before assertions run because HttpClient is not provided. Add the provider before merging.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: adding input schemas for selector-based agent tools.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 2…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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---

_{I hop through schemas, neat and clear
A selector string is welcome here
The routes now bloom from slash to about
TypeScript imports find their way out
Cac joins the package dance
This rabbit celebrates the advance}

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

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Actionable comments posted: 1

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Inline comments:
In `@src/app/app.spec.ts`:
- Line 9: Update the test providers for App so they include provideHttpClient(),
importing it from `@angular/common/http`; keep the existing provideRouter([])
provider and ensure both TestBed.createComponent(App) cases can resolve
HttpClient.

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📒 Files selected for processing (4)

• packages/ng-devtools/package.json
• packages/ng-devtools/src/devframe.ts
• src/app/app.spec.ts
• tsconfig.app.json

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