chore: maintenance pass – deps, CI modernization, repo-checker fixes

[DutchmanNL]

Maintenance pass addressing the ioBroker repository checker findings (issue #365), modernising CI/release tooling to the org standard, and refreshing dependencies. No adapter source code was changed — only config, CI, docs and dependencies.

Checker findings fixed

Errors

• E3020 / E3022 — test-and-release.yml: check-and-lint and deploy now use Node.js 24.
• E3027 — adapter-tests matrix now covers windows + macos (node 22 & 24).

Warnings

• W0028 — engines.node raised to >=22 (drops EOL Node 20).
• W0034 — @iobroker/adapter-core ^3.3.2 → ^3.4.3.
• W0066 — @types/node ^25 → ^22.10.0 (matches Node 22 typings).
• W1056 — io-package globalDependencies.admin → >=7.6.20.
• W3027 — adapter-tests OS matrix (see E3027).
• W5013 — removed gulpfile.js; translation flow relies on @iobroker/adapter-dev.
• W5612 — added missing Seconds between data polling key to admin/i18n/en.
• W6023 — added the standard Sentry notice to README.md.
• W8915 — dependabot npm cooldown: { default-days: 7 }.
• W8917 — dependabot ignore rule for @types/node semver-major (plus typescript minor+major); limit 15.

Suggestions

• S0062 / S0085 / S0088 — added @iobroker/adapter-dev and @tsconfig/node22; tsconfig.json now extends @tsconfig/node22/tsconfig.json.
• S3014 — adapter-tests declares needs: [check-and-lint].
• S6022 — README links to CHANGELOG_OLD.md.
• S8910 — removed .github/workflows/dependabot-auto-merge.yml.OLD.

Also: guarded concurrency group (${{ github.workflow }}-${{ github.ref }}, cancel-in-progress skipped for tags), fail-fast: false, timeout-minutes: 30; untracked committed .DS_Store files and added them to .gitignore; release script gains --branchPattern '*'.

Bot PRs absorbed by this PR

These iobroker-bot / dependabot PRs are superseded and can be closed once this merges:

• [iobroker-bot] Drop Node.js 20 support (End of Life) #375, [iobroker-bot] Drop Node.js 20 support (End of Life) #349 — Drop Node.js 20 support (engines.node >=22, workflow node bumps)
• [iobroker-bot] Update Node.js versions in test-and-release workflow #342 — Update Node.js versions in test-and-release workflow
• [iobroker-bot] Update Dependabot Configuration – Add npm Cooldown #340 — Dependabot npm cooldown
• [iobroker-bot] Add Dependabot Ignore Rule for @types/node Major Version Updates #358 — Dependabot ignore rule for @types/node major
• [iobroker-bot] Align @tsconfig/nodeXX with engines.node in package.json #357 — Align @tsconfig/nodeXX with engines.node
• [iobroker-bot] Add CHANGELOG_OLD.md to store older changelog entries #350 — Add CHANGELOG_OLD.md (file already present; README link added here)
• Dependabot dep bumps folded into the lockfile update: Bump @iobroker/adapter-core from 3.3.2 to 3.4.3 #372, Bump @types/node from 25.9.2 to 26.1.2 #370, Bump actions/setup-node from 4 to 7 #369, Bump actions/checkout from 4 to 7 #366, Bump ioBroker/testing-action-check from 1 to 2 #359

Leftovers (not addressed here)

• S5601 — admin/i18n still uses the long format ({lang}/translations.json); migrating to the short format is a separate, riskier change.
• S5005 — plain setTimeout() in main.js (module-level timer with explicit clearTimeout); converting to this.setTimeout() is optional and left as-is to avoid changing runtime behaviour.
• W3050 / W3052 / S3056 — informational: checker could not retrieve logs for old (>90 day) workflow runs; resolves naturally on the next release.
• Human PR fix: add storageNumber to stateAttr to resolve unknown state error #345 (tipp88, storageNumber stateAttr fix) is intentionally untouched.

Local verification

• npm run lint — pass (0 errors; only pre-existing jsdoc warnings)
• npm run test:package — pass (57 passing)
• npm run test:integration — pass (adapter boots on Node 24 / js-controller 7.2.3, "1 passing"). Note: the run initially collided with a shared test port (19001) because several sibling repos were running integration tests concurrently on the same machine; it passed cleanly once run in an isolated window.

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