feat(sssql): support correlated EXISTS/NOT EXISTS refresh relocation

[mk3008]

Summary

• Resolve SSSQL refresh拡張: correlated EXISTS / NOT EXISTS branch の再配置に対応する #768 by extending SSSQL refresh to relocate correlated EXISTS / NOT EXISTS branches.
• Add fail-fast anchor inference rules for correlated refresh (0 candidates or multiple candidates now error explicitly).
• Preserve scalar refresh behavior while adding correlated branch rebasing and relocation coverage.
• Add round-trip CLI regression tests (scaffold -> refresh, refresh -> refresh, and remove --all interplay).
• Document correlated refresh support and fail-fast rules in the SSSQL CLI reference.
• Add a changeset for rawsql-ts and @rawsql-ts/ztd-cli.

Verification

• pnpm --filter rawsql-ts test -- SSSQLFilterBuilder.test.ts (pass)
• pnpm --filter @rawsql-ts/ztd-cli test -- cliCommands.test.ts (pass; DB-dependent tests skipped as expected when pg_dump is missing)
• pnpm --filter rawsql-ts build (pass)
• pnpm --filter rawsql-ts lint (pass)

Merge Readiness

• No baseline exception requested.
• Baseline exception requested and linked below.

Tracking issue: #768
Scoped checks run: pnpm --filter rawsql-ts test -- SSSQLFilterBuilder.test.ts; pnpm --filter @rawsql-ts/ztd-cli test -- cliCommands.test.ts; pnpm --filter rawsql-ts build; pnpm --filter rawsql-ts lint
Why full baseline is not required: repository-wide baseline currently has pre-existing failures outside this change scope (for example packages/ztd-cli/tests/directoryFinding.docs.test.ts, packages/ztd-cli/tests/setupEnv.unit.test.ts, and packages/ztd-cli/tests/agentsPolicy.unit.test.ts) observed during pre-commit full-workspace test execution.

CLI Surface Migration

• No migration packet required for this CLI change.
• CLI/user-facing surface change and migration packet completed.

No-migration rationale: ztd query sssql refresh behavior is extended for correlated branch relocation without introducing a new command or required flag change.
Upgrade note: Existing ztd query sssql refresh <sqlFile> now also handles correlated EXISTS / NOT EXISTS relocation with explicit fail-fast behavior on ambiguous/missing anchors.
Deprecation/removal plan or issue: none
Docs/help/examples updated: docs/guide/ztd-cli-sssql-reference.md
Release/changeset wording: .changeset/correlated-refresh-exists-relocation.md

Scaffold Contract Proof

• No scaffold contract proof required for this PR.
• Scaffold contract proof completed.

No-proof rationale: this PR does not change feature/query scaffold output contracts.
Non-edit assertion: parent boundary non-edit behavior is unchanged.
Fail-fast input-contract proof: covered by correlated anchor ambiguity/missing tests.
Generated-output viability proof: covered by updated core and CLI regression tests.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 0586edca-5287-4030-a020-3d505d315ead

📥 Commits

Reviewing files that changed from the base of the PR and between ac00253 and e9e425f.

📒 Files selected for processing (5)

• .changeset/correlated-refresh-exists-relocation.md
• docs/guide/ztd-cli-sssql-reference.md
• packages/core/src/transformers/SSSQLFilterBuilder.ts
• packages/core/tests/transformers/SSSQLFilterBuilder.test.ts
• packages/ztd-cli/tests/cliCommands.test.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch 768-sssql-refresh拡張-correlated-exists-not-exists-branch-の再配置に対応する

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