Add 6 more project pages: signers, clients, fediverse platforms

New projects:
- Amber: Android Nostr signer (NIP-55/NIP-46)
- Alby: Lightning wallet and Nostr browser extension
- Habla: Long-form Nostr content platform (NIP-23)
- Coracle: Advanced Nostr web client with WoT
- PeerTube: Federated video hosting
- Lemmy: Federated link aggregator (Reddit alternative)

Total pages: ~74

Author: melvincarvalho

docs/projects/alby/index.md

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+---
+title: Alby
+description: Bitcoin Lightning wallet and Nostr browser extension
+---
+
+# Alby
+
+**Bitcoin Lightning wallet and Nostr signer in your browser.** Send sats and sign events without exposing your keys.
+
+## Overview
+
+Alby is a browser extension that brings Lightning payments and Nostr to the web. It acts as both a Bitcoin wallet and a Nostr key manager, enabling seamless payments and authentication across compatible websites.
+
+## Key Features
+
+### Lightning Payments
+
+```
+┌─────────────────────────────────────────────────────────┐
+│                    Alby Extension                        │
+├─────────────────────────────────────────────────────────┤
+│                                                          │
+│  💰 Balance: 50,000 sats                                │
+│                                                          │
+│  ┌─────────────────────────────────────────────────────┐│
+│  │  Website requests payment                           ││
+│  │  ⚡ 1,000 sats to merchant                          ││
+│  │                                                      ││
+│  │  [Approve]  [Deny]  [Set Budget]                   ││
+│  └─────────────────────────────────────────────────────┘│
+│                                                          │
+└─────────────────────────────────────────────────────────┘
+```
+
+- **WebLN support** — Pay invoices from any WebLN-enabled site
+- **LNURL** — Auth, pay, and withdraw
+- **QR scanning** — Pay Lightning invoices
+- **Budgets** — Set spending limits per site
+- **On-chain** — Swap to on-chain via deezy.io
+
+### Nostr Integration (NIP-07)
+
+Sign Nostr events without sharing your nsec:
+
+```javascript
+// Website requests signature
+const pubkey = await window.nostr.getPublicKey();
+const signedEvent = await window.nostr.signEvent(event);
+
+// Alby handles the signing
+// Website never sees your private key
+```
+
+Features:
+- **Multiple accounts** — Separate Nostr identities
+- **Per-site permissions** — Control which sites can sign
+- **Event filtering** — Approve by event kind
+- **Key derivation** — Generate keys from seed
+
+### Wallet Flexibility
+
+| Wallet Type | Description |
+|-------------|-------------|
+| **Alby Wallet** | Custodial, instant setup |
+| **Alby Hub** | Self-custodial Lightning node |
+| **LND** | Connect your own node |
+| **Core Lightning** | Connect your own node |
+| **Umbrel** | One-click connection |
+| **Start9** | Embassy integration |
+| **NWC** | Any NWC-compatible wallet |
+
+### Budgets & Permissions
+
+Set granular controls:
+
+```
+Site: primal.net
+├── Lightning budget: 1,000 sats/day
+├── Nostr signing: Allowed
+│   ├── Kind 1 (posts): Auto-approve
+│   ├── Kind 4 (DMs): Ask each time
+│   └── Kind 7 (reactions): Auto-approve
+└── Session: Remember for 7 days
+```
+
+## Installation
+
+### Browser Extensions
+
+| Browser | Link |
+|---------|------|
+| **Chrome** | [Chrome Web Store](https://chromewebstore.google.com/detail/alby-bitcoin-wallet-for-l/iokeahhehimjnekafflcihljlcjccdbe) |
+| **Firefox** | [Firefox Add-ons](https://addons.mozilla.org/firefox/addon/alby/) |
+| **Edge** | Chrome Web Store (compatible) |
+| **Brave** | Chrome Web Store (compatible) |
+
+### Mobile
+
+- **Alby Go** — Companion mobile app for payments
+
+## Usage
+
+### Initial Setup
+
+1. Install extension
+2. Create account or connect existing wallet
+3. Import Nostr key or generate new one
+4. Start using compatible sites
+
+### Paying with Lightning
+
+```
+1. Visit WebLN-enabled site
+2. Click "Pay with Lightning"
+3. Alby popup shows amount
+4. Approve payment
+5. Done!
+```
+
+### Signing Nostr Events
+
+```
+1. Visit Nostr client (Snort, Coracle, etc.)
+2. Click "Login with Extension"
+3. Alby requests permission
+4. Grant access
+5. Events sign automatically (per your settings)
+```
+
+### Tipping on Social Media
+
+Alby adds tipping buttons to:
+- Twitter/X
+- YouTube
+- GitHub
+- Reddit
+- Substack
+
+## Alby Hub
+
+Self-custodial Lightning node for power users:
+
+```
+┌─────────────────────────────────────────────────────────┐
+│                      Alby Hub                            │
+├─────────────────────────────────────────────────────────┤
+│                                                          │
+│  Your own Lightning node                                │
+│  ├── Full custody of funds                              │
+│  ├── Channel management                                 │
+│  ├── NWC connections                                    │
+│  └── Works with browser extension                       │
+│                                                          │
+│  Deploy on:                                             │
+│  ├── Umbrel                                             │
+│  ├── Start9                                             │
+│  ├── VPS                                                │
+│  └── Local machine                                      │
+│                                                          │
+└─────────────────────────────────────────────────────────┘
+```
+
+## NWC (Nostr Wallet Connect)
+
+Connect any NWC wallet to Alby extension:
+
+```javascript
+// NWC connection string
+nostr+walletconnect://pubkey?relay=wss://relay&secret=secret
+
+// Extension uses this to communicate with wallet
+// Payments route through your connected wallet
+```
+
+## Security
+
+| Feature | Description |
+|---------|-------------|
+| **Local storage** | Keys encrypted on device |
+| **No key export** | Private keys never leave extension |
+| **Per-site budgets** | Limit potential exposure |
+| **Permission prompts** | User approval required |
+| **Open source** | Auditable code |
+
+## Supported Platforms
+
+### Lightning
+
+- Any WebLN website
+- LNURL-enabled services
+- Lightning Address payments
+
+### Nostr
+
+- Snort
+- Coracle
+- Nostrudel
+- Primal (web)
+- Habla
+- Any NIP-07 client
+
+## Recent Updates (2025)
+
+- **Onchain swaps** — Via deezy.io integration
+- **Faster injection** — Improved window.nostr/webln
+- **NWC enhancements** — View pending/failed transactions
+- **Multiple languages** — Sinhalese, Tamil, Russian
+
+## Comparison
+
+| Feature | Alby | nos2x | Flamingo |
+|---------|------|-------|----------|
+| Lightning | Yes | No | No |
+| Nostr signing | Yes | Yes | Yes |
+| Multi-account | Yes | Yes | No |
+| Self-custody option | Yes | N/A | N/A |
+| Open source | Yes | Yes | Yes |
+
+## Links
+
+- **Website:** [getalby.com](https://getalby.com/)
+- **GitHub:** [getAlby/lightning-browser-extension](https://github.com/getAlby/lightning-browser-extension)
+- **Guides:** [guides.getalby.com](https://guides.getalby.com/)
+- **Alby Hub:** [albyhub.com](https://albyhub.com/)
+
+## See Also
+
+- [Nostr Protocol](/protocols/nostr) — The protocol
+- [Amber](/projects/amber) — Android signer
+- [Snort](/projects/snort) — Web client
+- [Habla](/projects/habla) — Long-form content