Deep-review round 1 of E22.
- A NUL character (`GET /assets/%00` logs the decoded path) made Postgres
refuse the row and with it the sink's whole batch, every user's rows
included. `to_row` replaces NUL in every text column and in attrs.
- An erased account's lines kept arriving after purge_user's DELETE: the
erasing request's own access line, a queued row, a background task.
`logs.forget_user` runs first; later rows are stored without the account,
and the check and the insert share a lock with the erasure.
- An admin setting the whole process to TRACE logged every user's query
string. The query is now logged only under the user's own Teljes consent,
and decoded before redaction, so `%40` no longer hides an address.
- The browser log ingest has an hourly storage budget per account (5 MiB,
one notice when spent) and reads only a JSON Content-Type, so a
same-site text/plain form post cannot write into a user's log.
RateLimiter takes a per-attempt cost for the byte budget.
- The root level is applied under the elevation lock: two concurrent
changes could leave it at the base while an elevation was active.
- Tests for the running sink (level gate, drain on stop) and for the
admin log level applied at runtime and at boot.
peter
fac5c4465a