Three fixes from testing the storage page:
- Placement: the "Reclaim space" button moves into the page header,
top-right (matching the metric page), instead of sitting in the body.
- It now actually reclaims: build cache needs -a to drop (docker reports
0 B "reclaimable" without it, but it's pure cache — safe to clear), so
the CLI uses `docker builder prune -af`. Previously the safe scope
freed ~nothing on a box whose reclaimable was mostly cache.
- Honest "Reclaimable" number: /api/system/storage was counting the
whole build cache AND unused tagged images, overstating what the safe
prune frees (e.g. 340 MB shown, ~96 MB per docker, button cleared 0).
Reclaimable now = dangling images + build cache only; stopped
containers and volumes are never counted (the safe prune never touches
them). Headline now matches the button's effect.
Also simplify the CLI output (drop the jargony scope notice and the
reclaimed-total greps) and re-enable the now-persistent header button
after the post-reclaim refreshes.
Signed-off-by: librelad <librelad@digitalangels.vip>
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