Eliminate `confirmAction()` and the duplicate `cloneNode` hack entirely.
One code path: everything goes through `showConfirm()` called by the
`htmx:confirm` interceptor.
Dialog HTML:
- `<form method="dialog">` for native close semantics; button `value`
becomes `dialog.returnValue` — no manual event listener reassignment.
JS:
- `showConfirm(message)` — Promise-based, listens for `close` once.
- `htmx:confirm` handler calls `showConfirm()` and calls `issueRequest`
if confirmed. Replaces both the old HTMX handler and `confirmAction()`.
Templates (Padelnomics, 14 files):
- All `onclick=confirmAction(...)` and `onclick=confirm()` removed.
- Form-submit buttons: added `hx-boost="true"` to form + `hx-confirm`
on the submit button.
- Pure HTMX buttons (pipeline_transform, pipeline_overview): `hx-confirm`
replaces `onclick=if(!confirm(...))return false;`.
Pipeline routes (pipeline_trigger_extract, pipeline_trigger_transform):
- `is_htmx` now excludes `HX-Boosted: true` requests — boosted form
POSTs get the normal redirect instead of the inline partial.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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