Release notes download table: filenames missing 'v' prefix → 404 on copy-paste

[ajianaz]

What

The auto-generated release notes download table lists filenames without the v prefix, but the actual release assets are named with it:

In release notes (v0.14.3)	Actual asset
uteke-x86_64-unknown-linux-gnu-0.14.3.tar.gz	uteke-x86_64-unknown-linux-gnu-v0.14.3.tar.gz

Users who copy-paste the filename from the notes get a 404.

Root cause

scripts/release-notes-template.md (L14-18) uses __VER__ placeholders in filenames, and .github/workflows/release.yml (L434) substitutes with the stripped version:

sed "s/__VER__/${VER#v}/g" scripts/release-notes-template.md

`` drops the v, so all five filenames in the table lose the prefix while the built artifacts keep it.

Fix

Either:

1. Template filenames become ...-v__VER__.tar.gz (keeps sed as-is), or
2. sed keeps the prefix for filename lines (distinct placeholder for filenames).

Option 1 is simpler.

Live impact

The published v0.14.3 notes carry the wrong filenames right now. After fixing the template, gh release edit v0.14.3 --notes-file <regenerated> can patch the live notes without a re-release.

Found during post-release validation of v0.14.3.