Publish as versioned Gitea module; move dictionary pipeline out

- Rename module to gitea.iliadenisov.ru/developer/scrabble-solver so it can be
  consumed as a versioned dependency (no go.work replace / CI clone).
- De-internalize wordlist and dictdawg as public packages.
- Remove cmd/builddict, dictprep/, the dictionaries submodule and the dawg
  Makefile: the word-list parsing and DAWG build now live in the separate
  scrabble-dictionary repository, which publishes the DAWG set as a release artifact.
- internal/dict loads the committed dawg/en_sowpods.dawg fixture for cmd/stress.
- Update README/CLAUDE docs accordingly.

scrabble/gcg_test.go

@@ -8,9 +8,9 @@ import (
 	"strings"
 	"testing"
 
-	"scrabble-solver/board"
-	"scrabble-solver/internal/dictdawg"
-	"scrabble-solver/rules"
+	"gitea.iliadenisov.ru/developer/scrabble-solver/board"
+	"gitea.iliadenisov.ru/developer/scrabble-solver/dictdawg"
+	"gitea.iliadenisov.ru/developer/scrabble-solver/rules"
 )
 
 // TestScoreRealGames replays real tournament games recorded in GCG format and checks that
@@ -19,11 +19,11 @@ import (
 //
 // The games come from cross-tables.com (annotated self-play) and are stored under
 // testdata/. They use the standard English board and SOWPODS, so the test loads the
-// committed dawg/en_sowpods.dawg (build it with `make dawg`).
+// committed dawg/en_sowpods.dawg.
 func TestScoreRealGames(t *testing.T) {
 	finder, err := dictdawg.Load("../dawg/en_sowpods.dawg")
 	if err != nil {
-		t.Skipf("need dawg/en_sowpods.dawg (run `make dawg`): %v", err)
+		t.Skipf("need dawg/en_sowpods.dawg: %v", err)
 	}
 	s := NewSolver(rules.English(), finder)
 	games, _ := filepath.Glob("testdata/*.gcg")