fix: fall back to default branch when resolving relative image URLs

The Anonymize form's preview built the readme baseUrl as
"https://github.com/<owner>/<repo>/raw/<source.branch>/". When the
form rendered before the branch field had populated (initial load,
or while waiting on getBranches), the URL became ".../raw//" and
the browser collapsed the empty segment, fetching ".../raw/<file>"
instead of ".../raw/<branch>/<file>". Relative <img src="./X">
references then 404'd against a path with no branch — exactly the
"branch missing" pattern in #407.

Fall back to details.defaultBranch (then "main") so the base URL is
always well-formed.

Fixes #407.
This commit is contained in:
tdurieux
2026-05-04 12:01:56 +02:00
parent 62a2c1cd5c
commit 7ace730960
2 changed files with 11 additions and 2 deletions
+1 -1
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