fan-control: presence-aware IPMI fan curve for the R730 PVE host

The iDRAC stock curve runs the CPU at ~72°C on the 7080 RPM floor even
under load (optimises for quiet, not cool). Add a bash daemon + systemd
unit that drives the chassis fans from CPU temp on two curves, picked by
garage occupancy (the server is in the garage): COOL when empty
(measured ~58-65°C under load), QUIET near the silent floor when the
ha-sofia garage door shows someone is there (open, or <15min since last
activity).

Manual fan mode is backstopped: bash EXIT trap + systemd ExecStopPost
hand fans back to Dell auto on stop/crash; CPU>=83°C or repeated IPMI
failures do the same. Pushgateway metrics (job=fan_control). 36 unit
tests cover the pure curve/hysteresis/presence/parse logic; DRY_RUN +
RUN_ONCE for integration checks. Deployed and verified on 192.168.1.127
(CPU 70->58°C in cool mode, hysteresis stepping confirmed).

Design:  docs/plans/2026-06-04-pve-fan-control-design.md
Runbook: docs/runbooks/fan-control.md

[ci skip]

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

stacks/f1-stream/files/backend/extractors/dd12.py

@@ -1,111 +0,0 @@
-"""DD12Streams extractor — scrapes inline m3u8 URLs from per-channel pages.
-
-Each DD12 sport page (`/nas`, `/f1`, `/sky`, etc.) renders an iframe to
-`/<channel>c1` which 302-redirects to `/new-<channel>/jwplayer`. That
-page contains a JW Player setup with the m3u8 URL hard-coded inline:
-
-    playerInstance.setup({
-      file: "https://...b-cdn.net/.../master.m3u8",
-      ...
-    });
-
-The JW Player runtime fails in our cluster (same fingerprint trap as
-hmembeds), but we don't need it — the file URL is in the HTML and any
-browser with H.264 codecs can play it directly via hls.js.
-
-Channel discovery: probe a known list. New ones can be added by checking
-DD12's own homepage / nav.
-"""
-
-import logging
-import re
-
-import httpx
-
-from backend.extractors.base import BaseExtractor
-from backend.extractors.models import ExtractedStream
-
-logger = logging.getLogger(__name__)
-
-BASE = "https://dd12streams.com"
-USER_AGENT = (
-    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) "
-    "AppleWebKit/605.1.15 (KHTML, like Gecko) "
-    "Version/17.4 Safari/605.1.15"
-)
-
-# (path, channel_label, title). Add as DD12 surfaces new channels.
-CHANNELS = (
-    ("nas", "DD12Streams", "NASCAR Cup Series (24/7) — DD12"),
-)
-
-_FILE_URL_RE = re.compile(r"""file\s*:\s*["']([^"']+\.m3u8[^"']*)["']""")
-
-
-class DD12Extractor(BaseExtractor):
-    @property
-    def site_key(self) -> str:
-        return "dd12"
-
-    @property
-    def site_name(self) -> str:
-        return "DD12Streams"
-
-    async def extract(self) -> list[ExtractedStream]:
-        results: list[ExtractedStream] = []
-        async with httpx.AsyncClient(
-            timeout=15.0,
-            follow_redirects=True,
-            headers={"User-Agent": USER_AGENT},
-        ) as client:
-            for path, label, title in CHANNELS:
-                try:
-                    page_url = f"{BASE}/{path}"
-                    resp = await client.get(page_url)
-                    if resp.status_code != 200:
-                        continue
-                    iframe_path = self._extract_iframe(resp.text)
-                    if not iframe_path:
-                        continue
-                    iframe_url = (
-                        iframe_path
-                        if iframe_path.startswith("http")
-                        else f"{BASE}{iframe_path}"
-                    )
-                    iframe_resp = await client.get(
-                        iframe_url, headers={"Referer": page_url}
-                    )
-                    if iframe_resp.status_code != 200:
-                        continue
-                    m3u8 = self._find_m3u8(iframe_resp.text)
-                    if not m3u8:
-                        continue
-                    results.append(
-                        ExtractedStream(
-                            url=m3u8,
-                            site_key=self.site_key,
-                            site_name=label,
-                            quality="",
-                            title=title,
-                            stream_type="m3u8",
-                        )
-                    )
-                except Exception:
-                    logger.debug(
-                        "[dd12] /%s extraction failed", path, exc_info=True
-                    )
-        logger.info("[dd12] Extracted %d stream(s)", len(results))
-        return results
-
-    @staticmethod
-    def _extract_iframe(html: str) -> str | None:
-        m = re.search(
-            r'<iframe[^>]+id=["\']vplayer["\'][^>]+src=["\']([^"\']+)["\']',
-            html,
-        )
-        return m.group(1) if m else None
-
-    @staticmethod
-    def _find_m3u8(html: str) -> str | None:
-        m = _FILE_URL_RE.search(html)
-        return m.group(1) if m else None