publish-2026aug03

What's Changed

• 🌐 [translation-sync] P2 pilot: read pandas_panel data from data-lectures by @mmcky in #12
• fix: restore the non-breaking spaces the pandas_panel.md sync stripped by @mmcky in #13
• Build strict: enable -W in ci.yml and publish.yml by @mmcky in #14
• Rebase: also match resync/* branches (action-translation v0.18.1) by @mmcky in #15
• Restore the (sympy)= target anchor dropped by the seed translation by @mmcky in #16
• Rebase pushes with the machine-user PAT (action-translation#125) by @mmcky in #17
• Rebase: require a same-repo head branch (fork noise guard) by @mmcky in #18
• 🌐 [translation-sync] Add Polars lecture to complement existing Pandas lecture by @mmcky in #20
• Enable the language switcher for the French edition by @mmcky in #21

Full Changelog: publish-2026-07-17...publish-2026aug03