* fix(api): redirect unauthorized browser requests to login for initial workspace zip
* fix(api): import Request and RedirectResponse in initial_workspace router
FastAPI was treating `request` as a required query parameter because
`Request` was missing from the fastapi import, causing 422 on
GET /api/initial-workspace.zip. `RedirectResponse` was also missing
(used for browser redirect to /login).
* review fixes: CHANGELOG + comment + 2 edge tests
- CHANGELOG.md: add [Unreleased] ### Fixed bullet per project rule.
- app/api/initial_workspace.py: comment explaining why this /api/*
endpoint intentionally opts out of the _API_PATH_PREFIXES
"never redirect /api/*" contract in app/main.py, and why matching
only `text/html` (not `*/*`) mirrors _wants_html()'s rationale.
- tests: add Accept: */* (curl default) and empty-Accept cases —
both lock in 401, defending the curl-tooling-must-keep-getting-401
contract the comment now documents.
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Co-authored-by: ZdenekSrotyr <zdenek.srotyr@keboola.com>
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