🔧 Point repo metadata at Gitea; drop redundant .npmignore

The repository.url shipped github.com/tmueller/... but the real remote
is gitea.e1nsnull.de/tmu/..., so the npm page's Repository link 404'd.
Add homepage + bugs, fix the URL, and rename the CONTRIBUTING "GitHub"
reference to the forge. Delete .npmignore: when a package.json `files`
allowlist is present npm never consults .npmignore, so it was dead
weight that would only drift. Add "gitea" to the cspell dictionary.

.npmignore

@@ -1,13 +0,0 @@
-node_modules/
-coverage/
-*.log
-*.tsbuildinfo
-src/
-.vscode/
-.editorconfig
-.oxfmtrc.json
-.oxlintrc.json
-.node-version
-cspell.json
-lefthook.yml
-commit-message-template

CONTRIBUTING.md

@@ -81,7 +81,7 @@ Publishing is CI-only by policy. Local `npm publish` is not supported.
     ```sh
     npm version <patch|minor|major>
     ```
-4. Push the tag to GitHub:
+4. Push the tag to the forge (Gitea):
     ```sh
     git push --follow-tags origin main
     ```

cspell.json

@@ -18,7 +18,8 @@
         "attw",
         "arethetypeswrong",
         "knip",
-        "tsgolint"
+        "tsgolint",
+        "gitea"
     ],
     "ignorePaths": ["dist", "node_modules", "coverage", "*.svg", ".gitignore"]
 }

package.json

@@ -10,10 +10,14 @@
         "pattern-matching",
         "typescript"
     ],
+    "homepage": "https://gitea.e1nsnull.de/tmu/tiny-pattern-ts#readme",
+    "bugs": {
+        "url": "https://gitea.e1nsnull.de/tmu/tiny-pattern-ts/issues"
+    },
     "license": "MIT",
     "repository": {
         "type": "git",
-        "url": "git+https://github.com/tmueller/tiny-pattern-ts.git"
+        "url": "git+https://gitea.e1nsnull.de/tmu/tiny-pattern-ts.git"
     },
     "files": [
         "dist",