feat(utp): port utopia naming, description, and image-host rules to the site profile

[maksii]

sites/utp on main carried taxonomy only, so UTP uploaded with the shared Unit3D release name, the
shared description, and no site policy. UTP prescribes its own space-delimited naming
(utp.to/pages/33) and hosts its own image host, so every upload needed
manual correction.

Stacked on #262. This targets chore/log-rename-signal, not main, because
internal/trackers/rules.go genuinely collides: UTP hoists registry.LookupRules and wraps the
modified-release block in a SkipModifiedReleaseCheck gate, while #262 replaces that block's body
with typed detection plus a debug log. The interleave is resolved here rather than left for merge
time. GitHub retargets this to main once #262 merges.

Naming

name.go builds UTP's space-delimited name behind SiteProfile.BuildName with BuildNameVersion
"v1". Token order is byte-identical to the previous catalog implementation. An unsupported category
falls back to the generic dotted base name, which mandatory Unit3D constructibility blocks before
upload regardless.

Description

description.go renders the shared Unit3D description with each screenshot's full-size original as
the [url] link target and the medium thumbnail as the displayed [img], which is what UTP expects.
Images without a medium thumbnail are left unchanged and the input slice is never mutated.

Rules and audio

rules.go declares SkipModifiedReleaseCheck, a new declarative RuleSet opt-out: because UTP
prescribes space-delimited naming, a renamed source is expected there rather than a rename violation,
so neither the heuristic nor the srrdb signal may block. AudioPolicy allows Ukrainian and English as
additional audio languages, since UTP releases always carry Ukrainian plus the original audio.

UTPPM image host

UTPPM becomes a UTP-owned conditional host rather than a generic selectable one, matching the reelflix
conversion precedent: a new UTPPMEnabled toggle gates it, and existing configs that placed utppm in
a generic slot lose that selection. UTPPMAPI already existed and is already covered by config secret
encryption. The utppm uploader now rejects a response carrying no image URL instead of returning an
empty upload result, with the remote message sanitized.

taxonomy.go lowercases the resolution key before mapping, so a differently cased prepared resolution
no longer falls through to the unknown fallback ID.

Tests

name_test.go covers name construction, type inference when the type field is empty, the title
preference chain, suppression overrides, and the unsupported-category fallback. taxonomy_test.go
covers every type and resolution mapping. description_test.go covers the URL swap including the
no-thumbnail passthrough and input immutability. rules_test.go proves the skip opt-out for both
rename signals, that a non-exempt tracker still fails, and that the gate also suppresses the
rule-match debug log. registry_test.go covers the rules, audio policy, and conditional-host wiring.
useSettingsState.test.ts covers the UTPPM settings conversion both ways.

go build ./..., the full no-race go test ./..., make lint (architecture/path/literal policy +
workflow-contracts-check + golangci-lint, 0 issues), make logpolicy, make gofix-check-changed,
make backend, git diff --check, and the full frontend check set (lint, lint:dead, typecheck,
test:unit — 194 pass, format:check) all pass. -race is not runnable locally (no C compiler); CI
supplies that pass.

The embedded WebUI was exercised by running the built server and loading it in a browser: the UTPPM
toggle and its API-key field render under Settings → Image Hosting, and utppm no longer appears in
the generic host-priority dropdown. make e2e-web reports 12 passed / 1 failed; the failure is
web-full-upload.spec.ts:275 (Client injection: completed), which reproduces on unmodified main
and is unrelated to this change.

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