releaseparser: move group-agnostic parser to groups/, GB doc-blocks, per-group JSON reports

Generalise the parser: the MOONBLOOD group profile is gone, the parser and
its dictionaries are now group-agnostic under internal/releaseparser/groups.

Positional model:
- [0]=Artist, [1]=Title are fixed and never matched against dictionaries, so
  titles like "Split"/"Demo"/"De" are never eaten.
- [len-1]=Group is always read from the line, not from the query key.
- [len-2]=Year when it is a 4-digit 19xx|20xx token; otherwise the slot is
  resolved as a middle-zone token (e.g. FLAC is still picked up as format).
- The middle zone is resolved via case-insensitive dictionaries in the order
  format -> source -> bit-depth -> resolution -> edition -> language ->
  catalogue number; stored values keep their original case.

Catalogue numbers: any "(...)" token in the middle zone is a catalogue number
regardless of content (digits, roman numerals, dots, underscores, mixed case);
splitting never breaks tokens inside parentheses.

Dictionaries moved to internal/releaseparser/groups/resources/dicts and
embedded via go:embed; dead profile fields (Name, ExpectedTailOrder) removed;
profile comments rewritten in British English.

File-based AnalyzeGroup/TestParseMoonblood removed — titles now come from the
database (cmd/srrdb: srrdb <releaser>..., config/secret.yaml DSN).

Validation output (cmd/srrdb):
- tmp/releaseparser/<group>.json         — per-group parsed ParsedRelease records
- tmp/releaseparser/<releaser>.report.json — per-request aggregate (same as console)
- review_unknown_tokens.txt              — unknown/warning rows for manual review

Tests updated for the positional model; added
TestParseCatalogNumberWithDotAndRoman for (DYN.3140-2) and (GOWP_DCCCLXXXIX).
go build, go vet and go test all pass.

internal/releaseparser/types.go

@@ -1,32 +1,30 @@
 package releaseparser
 
 type GroupProfile struct {
-	Name              string
-	ExpectedTailOrder []string
-	FormatTokens      map[string]bool
-	SourceTokens      map[string]bool
-	BitDepthTokens    map[string]bool
-	ResolutionTokens  map[string]bool
-	LanguageMarkers   map[string]bool
-	EditionTokens     map[string]bool
-	CommentTokens     map[string]bool
+	FormatTokens     map[string]bool
+	SourceTokens     map[string]bool
+	BitDepthTokens   map[string]bool
+	ResolutionTokens map[string]bool
+	LanguageMarkers  map[string]bool
+	EditionTokens    map[string]bool
+	CommentTokens    map[string]bool
 }
 
 type ParsedRelease struct {
 	Raw           string
 	Group         string
+	Artist        string
 	Year          int
+	Title         string
+	Source        string
+	Edition       string
+	CatalogNo     string
+	Language      string
 	BitDepth      string
 	Resolution    string
 	Comment       string
-	CatalogNo     string
-	Source        string
 	Format        string
-	Language      string
-	Edition       string
 	Core          string
-	Artist        string
-	Title         string
 	UnknownTokens []string
 	Warnings      []string
 	Confidence    float64