feat(cli): add calls-tool and no-tool-call assertions (#412) - #446

Thanks @bhushan4work, this does what #412 asks for. Matching is right, bad values throw so not- can't turn them into a pass, and the failure reasons are useful. With current dev merged in, build, typecheck, test:coverage, lint (same as dev), api:check, publint and docs:check pass. Three small things before I merge:

1. packages/cli/src/test/assertions/tools.ts:7-23: exactMatch is never fully run by the tests. Coverage shows lines 10-11 and 14-19 aren't hit, because the only array case (test-command.test.ts:558) holds strings. That's the code where partial and exact matching differ, so please add a case with an object inside an array, for example args: { items: [{ sku: 1 }] } against an input of { items: [{ sku: 1, qty: 2 }] }, and expect it to fail.

2. While you're there, exactMatch can be isDeepStrictEqual from node:util (the CLI only runs on Node, and for JSON values the result is the same). The array branch in matchesPartial at tools.ts:27-30 repeats the one in exactMatch, so it can become if (Array.isArray(expected)) return isDeepStrictEqual(expected, actual);. That removes about 15 lines, the uncovered ones with them.

3. tools.ts:102: the reason reads the turn called tools (it called lookup_order({"id":"A-1"})), which says "called" twice. Something like the turn called ${calls.map(formatCall).join(', ')} reads better. Update the expected strings at test-command.test.ts:633 and the not- one to match.

A minor one, take it or leave it: turn.toolCalls ?? [] at tools.ts:80 and :97 isn't needed, since toolCalls is always set on TurnResult.

Heads up: #430 edits the import lines next to yours in assertions/index.ts, so whichever of the two lands second will need a quick rebase.

Thanks @bhushan4work, all of it is in: isDeepStrictEqual for arrays, the object-in-array cases both ways, the reworded reason, and the ?? [] gone. tools.ts is at 98% statements and 96% branches now. With current dev merged in, build, typecheck, test:coverage, lint (same as dev), api:check and docs:check pass. Merging once CI is green, and then #430 will need the small rebase in assertions/index.ts.