Add a small, tested base for all three clients, and Gitea CI/release workflows

internal/client (new): a typed Go HTTP client for the API - login,
register, logout, me, and full CRUD for games/platforms - shared by the
TUI and the Fyne GUI so request-building, auth and error handling (an
APIError with the HTTP status) live in one tested place instead of being
duplicated. 8 tests against an httptest server covering success, 401, 403
and that the token is stored/cleared at the right times.

cmd/tui (rewrite): drops the old unauthenticated read-only viewer. Now a
login screen (bubbles/textinput) -> a scrollable games table
(bubbles/table) with 'r' to refresh, built as an explicit state machine
(screenLogin/screenLoading/screenGames) so Update's transitions are
testable without a real terminal. 9 tests driving Update() directly.

cmd/gui (rewrite): drops raylib for Fyne. Same shape as the TUI - a login
form, then a games table, with networking on a goroutine and fyne.Do for
the UI updates. The table-cell and login-validation logic are plain
functions with no Fyne/display dependency, so they're tested directly (7
tests) rather than needing Fyne's headless test driver.

internal/api: tagged every operation (Auth/Platforms/Games/Misc) so the
generated OpenAPI spec groups into named services instead of one bucket;
api/openapi.json regenerated. Added CORS middleware (wildcard origin, no
credentials needed since clients use a bearer token, not the cookie) -
needed for the new web client's browser requests to the API's a different
origin.

web/ (new): an Angular 22 + Material app, API client generated from
api/openapi.json via ng-openapi-gen (services: true for per-resource
classes - AuthService/GamesService/PlatformsService - instead of one
generic Api facade). A Session service holds the token/user as signals,
persists the token to localStorage, and is the only thing that calls the
generated AuthService; an HttpInterceptorFn attaches the bearer token to
every request; a CanActivateFn guard protects /games. Login and Games are
standalone, lazy-loaded route components. 21 tests (Vitest, Angular's new
default - no browser/Karma needed) covering the service, interceptor,
guard and both components, run via `npm test` exactly as CI will call it.

Justfile: fixed run-tui/run-gui, which used `go run .../main.go` - broken
now that both packages span multiple files, since that only compiles the
one named file. Added web-install/web-dev/web-build/web-test.

.gitea/workflows/ci.yml (moved from .github, which Gitea doesn't read):
on push to main/develop - gofmt, go vet, go build, go test, go mod tidy
diff (with the Fyne build's system deps installed), sqlc diff, and the
web app's build+test.

.gitea/workflows/release.yml (new): on a vX.Y.Z tag, cross-compiles
api+tui for linux/darwin/windows (amd64+arm64, pure Go, no cgo), builds
the Fyne GUI for linux/amd64 only (cgo + its OpenGL/X11 link means it
can't cross-compile from one Linux runner the way api/tui do, and this
repo has no registered macOS/Windows runner to build it on natively -
documented in the workflow's comments), builds the web app, and creates a
Gitea release with all of it attached via the Gitea API. Written to
Gitea's documented GitHub-Actions-compatible syntax but not executable
from here - there's no Gitea server in this environment to run it
against, unlike everything else in this commit, which was.

Verified: every Go package builds/vets/tests clean; sqlc diff and go mod
tidy -diff are clean; the Angular app builds for production and its test
suite passes via `npm test`/`npm run build` (the exact commands CI runs),
including after a clean `npm ci` from the committed lockfile; the new CORS
config was checked with real preflight and GET requests against a running
server, not just read.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

internal/api/routes.go

@@ -17,6 +17,7 @@ func RegisterRoutes(api huma.API, queries db.Querier) {
 	// Root/Hello Route
 	huma.Register(api, huma.Operation{
 		OperationID: "get-hello",
+		Tags:        []string{"Misc"},
 		Method:      http.MethodGet,
 		Path:        "/hello",
 		Summary:     "Say Hello",
@@ -52,6 +53,7 @@ func RegisterRoutes(api huma.API, queries db.Querier) {
 func registerPlatformRoutes(api huma.API, queries db.Querier) {
 	listOp := huma.Operation{
 		OperationID: "list-platforms",
+		Tags:        []string{"Platforms"},
 		Method:      http.MethodGet,
 		Path:        "/api/platforms",
 		Summary:     "List Platforms",
@@ -71,6 +73,7 @@ func registerPlatformRoutes(api huma.API, queries db.Querier) {
 
 	getOp := huma.Operation{
 		OperationID: "get-platform",
+		Tags:        []string{"Platforms"},
 		Method:      http.MethodGet,
 		Path:        "/api/platforms/{id}",
 		Summary:     "Get Platform",
@@ -88,6 +91,7 @@ func registerPlatformRoutes(api huma.API, queries db.Querier) {
 
 	createOp := huma.Operation{
 		OperationID: "create-platform",
+		Tags:        []string{"Platforms"},
 		Method:      http.MethodPost,
 		Path:        "/api/platforms",
 		Summary:     "Create Platform",
@@ -103,6 +107,7 @@ func registerPlatformRoutes(api huma.API, queries db.Querier) {
 
 	updateOp := huma.Operation{
 		OperationID: "update-platform",
+		Tags:        []string{"Platforms"},
 		Method:      http.MethodPut,
 		Path:        "/api/platforms/{id}",
 		Summary:     "Update Platform",
@@ -124,6 +129,7 @@ func registerPlatformRoutes(api huma.API, queries db.Querier) {
 
 	deleteOp := huma.Operation{
 		OperationID: "delete-platform",
+		Tags:        []string{"Platforms"},
 		Method:      http.MethodDelete,
 		Path:        "/api/platforms/{id}",
 		Summary:     "Delete Platform",
@@ -185,6 +191,7 @@ func parseDate(s string) (pgtype.Date, error) {
 func registerGameRoutes(api huma.API, queries db.Querier) {
 	listOp := huma.Operation{
 		OperationID: "list-games",
+		Tags:        []string{"Games"},
 		Method:      http.MethodGet,
 		Path:        "/api/games",
 		Summary:     "List Games",
@@ -212,6 +219,7 @@ func registerGameRoutes(api huma.API, queries db.Querier) {
 
 	getOp := huma.Operation{
 		OperationID: "get-game",
+		Tags:        []string{"Games"},
 		Method:      http.MethodGet,
 		Path:        "/api/games/{id}",
 		Summary:     "Get Game",
@@ -237,6 +245,7 @@ func registerGameRoutes(api huma.API, queries db.Querier) {
 
 	createOp := huma.Operation{
 		OperationID: "create-game",
+		Tags:        []string{"Games"},
 		Method:      http.MethodPost,
 		Path:        "/api/games",
 		Summary:     "Create Game",
@@ -280,6 +289,7 @@ func registerGameRoutes(api huma.API, queries db.Querier) {
 
 	updateOp := huma.Operation{
 		OperationID: "update-game",
+		Tags:        []string{"Games"},
 		Method:      http.MethodPut,
 		Path:        "/api/games/{id}",
 		Summary:     "Update Game",
@@ -327,6 +337,7 @@ func registerGameRoutes(api huma.API, queries db.Querier) {
 
 	deleteOp := huma.Operation{
 		OperationID: "delete-game",
+		Tags:        []string{"Games"},
 		Method:      http.MethodDelete,
 		Path:        "/api/games/{id}",
 		Summary:     "Delete Game",