By-model panel gains a segmented 1天/7天/全部 control. Selecting a
range fetches /api/stats?since=<RFC3339> and re-renders only that table
client-side, replicating the human/rate template helpers in JS; the
existing /api/stats since param already drives the server-side filter.
- internal/server/templates/admin.html: filter UI + JS, empty/loading states
- internal/server/server_test.go: render test for the filter controls
- scripts/test-instance.sh: build→start→stop→clean test-instance helper
- Extract callUpstream helper to deduplicate ~30 lines between chatCompletions and responses
- Move HTML templates to internal/server/templates/ via go:embed (server.go 1749→1192 lines)
- Consolidate 4 copies of firstNonEmpty into util.FirstNonEmpty
- Extract chatStreamChunk named type shared by aggregateStream and aggregateResponsesStream
- Fix tool-call ordering: iterate sorted map keys instead of sequential 0..N
- Map upstream finish_reason to Responses API status (length/content_filter → incomplete)
- Surface /v1/models errors as 401/502 instead of silently returning empty 200
- Add Secure cookie flag via isTLSRequest helper
- forEachSSEChunk: use sseDataPayload parser, drop redundant json.Valid, distinguish bufio.ErrTooLong
- Fix StreamIdleTimout typo → StreamIdleTimeout
- sso.go: single Read → io.ReadAll(io.LimitReader), explicit unknown error fallback
m1saka