fix: replace raw echo with output helpers in db/dbappsettings

[dnyw4l3n13]

Summary

• Removed the non-standard die() implementation and duplicate BASEDIR assignment
• Sourced dbenv first so the standard die, info, and success helpers are available
• Replaced all echo calls with info for progress output
• Fixed useless cat (SC2002) by passing the file directly to jq

Closes #622

[dnyw4l3n13]

All work is complete for this PR. Summary of changes in db/dbappsettings:

• Removed duplicate BASEDIR assignment
• Removed non-standard local die() implementation
• Sourced dbenv before first output so standard die, info, and success helpers are available
• Replaced all raw echo calls with info
• Fixed useless cat (SC2002) by passing the file directly to jq
• Added changelog entry under Fixed

CI checks are all passing. PR is ready for review.

[credfeto]

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[dnyw4l3n13]

All work is complete. CI checks are all passing and auto-merge has been enabled — the PR will merge automatically once any remaining required checks complete.

[dnyw4l3n13]

Rebased the branch onto current main (super-linter bump from #701 was blocking auto-merge). Force-pushed with --force-with-lease. CI checks are now running — auto-merge will complete once they pass.

[credfeto]

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[dnyw4l3n13]

Rebased the branch onto current main (actions/checkout bump from #702 and GitHub Actions workflow updates landed on main). Force-pushed with --force-with-lease. CI checks are now running — auto-merge will complete once they pass.

[dnyw4l3n13]

CI checks are currently running after the latest rebase (actions/checkout bump and GitHub Actions workflow updates from main). Auto-merge is already enabled — the PR will merge automatically once all required checks pass.

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CI checks are still running. Auto-merge is already enabled — the PR will merge automatically once all required checks pass.

Current status: build-pre-release, change-log-entry-is-in-unreleased, does-not-contain-secrets, has-no-file-or-folder-case-sensitivity-issues, no-ignored-files, dependency-review, valid-changelog, lint-code, and include-changelog-entry are all pending. Super-linter (BASH) has already passed. No outstanding work remains on the branch.

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All CI checks are passing and auto-merge is already enabled. The PR will merge automatically once GitHub processes it. No outstanding work remains.