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feat: cap-aware autoscaler + token-gated whole-instance tag reset (operator feedback)
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Autoscaler (agent 2026-07-02.5): the buffer-occupancy signal alone would peg
downloaders at DL_MAX while the bandwidth CAP — not concurrency — is the real
constraint (8 streams sharing 8 MB/s move no more data than 4). Growth is now
gated on the pipe having headroom (net < 85% of cap) and a pipe pinned at the
cap (>= 95%) sheds streams down to 3; dead band prevents flapping. The UI hint
says 'holding at the bandwidth cap' and /status reports bw_capped, so the
behavior is legible without tests that need the ML stack.

Reset content tagging: stays a FULL-instance reset (operator's call), but now
lives in a fenced 'Danger zone' section on Cleanup and the apply is gated by a
preview-derived confirm token (mirrors the Tier-C bulk-delete pattern — stale
counts are rejected server-side). Copy no longer claims suggestions repopulate:
it says plainly the heads' training examples are deleted and re-tagging starts
fresh. Moved out of TagMaintenanceCard into DangerZoneCard.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CDgx8bQS5YrGRK76v8HUnM
This commit is contained in:
Bryan Van Deusen
2026-07-02 16:14:48 -04:00
parent eaea4308fc
commit 7c19ad91ed
9 changed files with 257 additions and 78 deletions
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agent/fc_agent/app.py
+3 -2
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@@ -21,7 +21,7 @@ log = logging.getLogger("fc_agent.app")
# Bump on every agent change. The page embeds this and /status reports it; the UI
# warns to reload when they differ — so a stale browser-cached page can't be
# mistaken for "the new image didn't deploy". (Belt-and-braces with no-store.)
VERSION = "2026-07-02.4 · bandwidth governor: aggregate download cap (MB/s dial) so the agent can't saturate the desktop's network"
VERSION = "2026-07-02.5 · cap-aware autoscaler: downloaders stop growing (and shed) when the bandwidth cap — not concurrency — is the bottleneck"
logbuf.install()
cfg = Config.from_env()
@@ -344,7 +344,8 @@ _PAGE = """<!doctype html><html><head><meta charset=utf-8>
// Auto on → dial reflects the auto-chosen count (read-only); off → manual.
if(document.activeElement!==autochk) autochk.checked=!!s.auto
conc.disabled=!!s.auto; conc.style.opacity=s.auto?0.55:1
conchint.textContent=s.auto?('auto-tuning downloaders to keep the GPU fed · max '+CAP):('manual downloaders · max '+CAP)
conchint.textContent=(s.auto?('auto-tuning downloaders to keep the GPU fed · max '+CAP):('manual downloaders · max '+CAP))
+(s.bw_capped?' · holding at the bandwidth cap (more downloaders would not go faster)':'')
if(document.activeElement!==conc) conc.value=s.concurrency
conc.max=CAP
// Connection pill + queue come only from the /status poll (the Start/Stop POST