feat: compact table counts and add count query actions

[DevvoLazza]

Description

Million-row catalog counts currently occupy too much space on desktop and use thousands-only formatting on mobile. Both explorers now use compact counts and offer an editable count query from the table menu.

Type of Change

• New feature
• Documentation update
• Test addition or update

Related Issue

Closes #702

Changes Made

• Share K/M/B/T formatting between desktop and mobile. Tooltips preserve the full reported figure and explain that catalog counts are estimates on most engines.
• Add Generate Count Query beside Generate Query: qualified SQL with dialect quoting and terminators, COUNT_BIG on SQL Server, or MongoDB's count/filter document. Unsupported key grammars and derived prefix groupings receive no action.
• Open an editable tab without executing the count, so users can add filters before Run. Preserve the embedded workspace's navigation guard during pending object edits.

Testing

• Full suite with coverage: 545 files passed; 17,600 tests passed, 71 skipped. Twelve Helm files were not run because Helm is unavailable.
• Format, lint, typecheck, knip, README parity, chart version, channel showcase, and security checks passed. Lint retains 240 existing warnings and has zero errors.
• Production application build, library build, and package type-resolution checks passed.
• Generated SQL counted a real SQLite table containing 1,553,900 rows; adding a filter returned 7. Browser validation using the actual explorer components and tab manager confirmed compact badges, explicit Run, MongoDB query generation, and the absent Redis count action.
• Modified source files have 100% line coverage. The global coverage gate reports 99.99% solely because unchanged src/instrumentation.ts:32-36 is covered by a POSIX permission test skipped on Windows. Linux CI must verify the required 100% gate.

Environment: Windows, Node.js 24.16.0, Bun 1.4.2, LibreDB Studio 0.16.0. Browser catalog/provider data were fixtures; no live PostgreSQL/MySQL or MySQL catalog-drift verification was possible locally.

Checklist

• Reviewed the diff and updated documentation and tests
• New and existing available tests pass locally
• No new warnings, dependency changes, lockfile changes, generated files, or local configuration included
• Required CI test job passes the 100% line-coverage gate

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

[cevheri]

rebase, fix CI

[DevvoLazza]

Hi, I won’t be able to work on this today or tomorrow as I’m away from home. As soon as I’m back, I’ll continue and finish the remaining fixes.