chore: align CLI .version() literals with package.json across 6 packages

[LanNguyenSi]

Refs agent-tasks 163a2845-4b05-4c24-83d1-8e4fb36a4e96. Third post-Phase-2 drift cleanup PR; siblings #70 (understanding-gate README) and #71 (debug-playbook-engine canMakeClaim example) already merged.

Why

Six packages hard-coded .version("1.0.0") in their commander entry while package.json was at 0.1.0 or 0.2.0. Every <bin> --version invocation printed a wrong number. Same shape understanding-gate had pre-PR-#70.

What changed

One-character (well, three-character) literal swap per file, no behaviour change. Quote style preserved per file (mix of " and ' across the monorepo, not normalized).

Package	package.json	was	now	file:line
claim-gate	0.2.0	"1.0.0"	"0.2.0"	packages/claim-gate/src/cli.ts:8
debug-playbook-engine	0.1.0	'1.0.0'	'0.1.0'	packages/debug-playbook-engine/src/index.ts:13
domain-router	0.1.0	'1.0.0'	'0.1.0'	packages/domain-router/src/index.ts:13
evidence-ledger	0.2.0	"1.0.0"	"0.2.0"	packages/evidence-ledger/src/cli.ts:24
grounding-wrapper	0.2.0	'1.0.0'	'0.2.0'	packages/grounding-wrapper/src/index.ts:25
readme-first-resolver	0.1.0	'1.0.0'	'0.1.0'	packages/readme-first-resolver/src/index.ts:13

Verification

Per touched package, npm test plus npm run typecheck:

Package	tests	runner	typecheck
claim-gate	22 / 22	vitest	clean
debug-playbook-engine	21 / 21	jest	clean
domain-router	29 / 29	jest	clean
evidence-ledger	57 / 57	vitest	clean
grounding-wrapper	25 / 25	jest	clean
readme-first-resolver	14 / 14	jest	clean

Total 168 / 168 green. slop-detector clean on commit message.

Out of scope

• No package.json version bumps. The fix is "make the CLI agree with the published version", not "cut a release".
• Recurrence-prevention script (CI check that cli.ts .version() literal matches package.json) was offered as optional in the task description; can be filed as a follow-up if useful.
• Two pre-existing unused-import diagnostics surfaced by the language server while editing (detectClaimType in claim-gate/src/cli.ts:4, recordStep in debug-playbook-engine/src/index.ts:4, advancePhase in readme-first-resolver/src/index.ts:7). Not introduced by this PR; they were sitting on master. Out of scope for a one-line version fix.

Test plan

• Review subagent confirms each literal now matches its package's package.json version on master.
• Reviewer agrees mixing single/double quotes per file (no normalization) is fine.
• CI green.