feat: share spaces via email (#123)

### Add Share via Email Feature

**Context**:  
This PR introduces the Share via Email feature, allowing users to share
spaces using either an email address or DID. Depending on the input, we
render different buttons and actions (e.g., sharing via email or
generating a downloadable UCAN). Once shared via email, the “Shared
With” panel lists all shared emails (did:mailto) along with their
capabilities, fetched from the delegations stored in the client.

**Short Demo**:

https://www.loom.com/share/b33ee2f22a5b44628e5d9fc3d599dbf7?sid=0b008211-fc28-4cd4-a716-e67f44067661

**Minor Notes**:
- The Share button dynamically changes based on whether the user
provides an email or DID.
- The delegation list is displayed with relevant capabilities in the
“Shared With” panel.

package.json

@@ -23,13 +23,13 @@
     "@ucanto/core": "^9.0.0",
     "@ucanto/interface": "^9.0.0",
     "@ucanto/transport": "^9.0.0",
-    "@w3ui/react": "^2.3.0",
+    "@w3ui/react": "2.3.0",
     "@web3-storage/access": "^19.0.0",
     "@web3-storage/capabilities": "^17.1.0",
     "@web3-storage/content-claims": "^3.2.1",
     "@web3-storage/data-segment": "^5.0.0",
     "@web3-storage/did-mailto": "^2.1.0",
-    "@web3-storage/w3up-client": "^13.1.1",
+    "@web3-storage/w3up-client": "13.1.1",
     "archy": "^1.0.0",
     "ariakit-utils": "0.17.0-next.27",
     "blueimp-md5": "^2.19.0",
@@ -53,9 +53,9 @@
     "@types/react": "latest",
     "@types/react-dom": "latest",
     "autoprefixer": "latest",
-    "eslint": "latest",
-    "eslint-config-next": "latest",
-    "eslint-plugin-next-on-pages": "^1.6.3",
+    "eslint": "8.55.0",
+    "eslint-config-next": "14.0.4",
+    "eslint-plugin-next-on-pages": "1.6.3",
     "postcss": "latest",
     "tailwindcss": "latest",
     "typescript": "latest",