chore(spike): recover the /bygge toolchain from tmpfs (#28)

analyze_srt.py, build_page.py and transcode.yaml produced the /bygge
prototype. They were sitting in a session scratchpad on tmpfs, one reboot
from gone, while spike issues #29-#31 were written as if they had to be
built from scratch.

Committed as found, defects documented rather than fixed: max_tokens=6000
truncates anything past ~6 minutes of audio, the page title is hardcoded,
and the schema still carries fields no consumer renders.

The four-check validator is the part worth keeping — the coverage-gap and
Swedish-number-grounding checks catch errors that timestamp and citation
checks structurally cannot.

Real transcripts and analyses stay out: this repo is public and the
recordings are a named person discussing a client's project. Only the
synthetic fixture is committed, which exercises all four checks with no
model call.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BeAp5LTscnz2W7Ubt4eJ6m

.gitignore

@@ -11,3 +11,14 @@
 .env.*
 !.env.example
 *.local
+
+# Spike media (#28): real recordings, their transcripts and derived analyses are
+# private third-party content and this repo is public. Only synthetic fixtures
+# are committed — see scripts/spike-media/README.md.
+/scripts/spike-media/*.mov
+/scripts/spike-media/*.mp4
+/scripts/spike-media/*.wav
+/scripts/spike-media/*.srt
+/scripts/spike-media/*.json
+/scripts/spike-media/*.html
+!/scripts/spike-media/fixtures/