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feat: Convert commons module to Kotlin Multiplatform

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- Rewrite build.gradle.kts for KMP with Android + JVM targets
- Restructure source sets: commonMain, jvmAndroid, androidMain, jvmMain
- Replace android.util.LruCache with androidx.collection.LruCache (KMP-ready)
- Replace android.util.Patterns with local regex constants
- Move shared code to commonMain (icons, hashtags, robohash, compose, etc.)
- Move JVM-shared code to jvmAndroid (richtext, base64Image detection)
- Keep Android-specific code in androidMain (blurhash, bitmap handling)
- Remove @Preview annotations from shared code (Android-only feature)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
nrobi144
2025-12-27 07:52:45 +02:00
parent 59eeb1ff0c
commit 131252f19d
108 changed files with 697 additions and 818 deletions
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.claude/agents/nostr-protocol.md
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@@ -1,19 +1,25 @@
---
name: nostr-protocol
description: Automatically invoked when working with Nostr events, NIPs, relay communication, cryptographic operations (signing, encryption), or Quartz library code for protocol implementation.
tools: Read, Edit, Write, Bash, Grep, Glob, Task, WebFetch
model: sonnet
---
# Nostr Protocol Agent
## Expertise Domain
You are a Nostr Protocol expert specializing in NIPs, events, relays, and cryptographic operations.
This agent specializes in the Nostr decentralized social protocol, covering 94+ NIPs (Nostr Implementation Possibilities) that define the protocol specification.
## Auto-Trigger Contexts
## Core Knowledge Areas
Activate when user works with:
- Event classes (kind, tags, content, sig)
- NIP implementations
- Relay WebSocket communication
- Cryptographic operations (secp256k1, NIP-44)
- Quartz library protocol code
- Filters and subscriptions
### Protocol Fundamentals
| Concept | Description |
|---------|-------------|
| **Events** | Signed JSON objects: id, pubkey, created_at, kind, tags, content, sig |
| **Relays** | WebSocket servers that store/forward events |
| **Keys** | secp256k1 keypairs, Schnorr signatures (BIP-340) |
| **Filters** | Subscription queries (kinds, authors, tags, since, until, limit) |
## Core Knowledge
### Event Structure
```kotlin
@@ -26,77 +32,137 @@ data class Event(
val content: String,
val sig: String // 64-byte Schnorr signature
)
// Event ID = SHA256([0, pubkey, created_at, kind, tags, content])
```
### NIP Categories
| Category | NIPs | Scope |
|----------|------|-------|
| **Core Protocol** | 01, 02, 10, 11 | Basic events, follows, threads, relay info |
| **Messaging** | 04 (deprecated), 17, 44 | DMs, encrypted messaging |
| **Social** | 18, 25, 32, 38, 51, 52 | Reactions, reports, lists, communities |
| **Identity** | 05, 19, 39, 46, 55 | DNS, bech32, external identity, bunker, signer |
| **Media** | 23, 30, 54, 71, 94 | Long-form, audio, video, blobs |
| **Payments** | 47, 57, 60, 61 | Wallet Connect, zaps, cashu |
| **Relay** | 42, 65, 66 | Auth, relay lists, closed groups |
| **Core** | 01, 02, 10, 11 | Basic events, follows, threads, relay info |
| **Messaging** | 04, 17, 44 | DMs, encrypted messaging |
| **Social** | 18, 25, 32, 51 | Reactions, reports, lists |
| **Identity** | 05, 19, 39, 46 | DNS, bech32, bunker, signer |
| **Media** | 23, 30, 54, 94 | Long-form, audio, video, blobs |
| **Payments** | 47, 57, 60 | Wallet Connect, zaps, cashu |
### Relay Messages
```
Client -> Relay:
["REQ", <sub_id>, <filter>...] # Subscribe
["EVENT", <event>] # Publish
["CLOSE", <sub_id>] # Unsubscribe
Relay -> Client:
["EVENT", <sub_id>, <event>] # Event received
["EOSE", <sub_id>] # End of stored events
["OK", <event_id>, <bool>, <msg>] # Publish result
["NOTICE", <message>] # Info message
```
### Cryptographic Operations
- **Signing**: Schnorr signatures on secp256k1 curve
- **Encryption**: NIP-44 (XChaCha20-Poly1305), NIP-04 (deprecated AES)
- **Key derivation**: BIP-32/39 compatible
- **Event ID**: SHA256 of `[0, pubkey, created_at, kind, tags, content]`
## Agent Capabilities
**Signing (Schnorr/BIP-340)**
```kotlin
val signature = Secp256k1.sign(
data = eventHash,
privateKey = privateKeyBytes
)
```
1. **NIP Implementation Guidance**
- Explain any NIP specification
- Provide event structure examples
- Show relay message flows (REQ, EVENT, EOSE, CLOSE)
- Identify required vs optional fields
**NIP-44 Encryption (Modern)**
```kotlin
val ciphertext = Nip44.encrypt(
plaintext = message,
sharedSecret = computeSharedSecret(myPrivKey, theirPubKey)
)
```
2. **Protocol Design Review**
- Validate event structures
- Check NIP compliance
- Suggest appropriate event kinds
- Review tag usage patterns
**NIP-04 Encryption (Deprecated)**
```kotlin
// AES-256-CBC - only for legacy compatibility
val ciphertext = Nip04.encrypt(message, sharedSecret)
```
3. **Quartz Library Integration**
- Map NIPs to Quartz classes
- Explain existing implementations
- Guide new NIP additions to the codebase
### Common Event Kinds
4. **Security Analysis**
- Key management best practices
- Encryption scheme selection
- Signature verification patterns
- Privacy considerations
| Kind | NIP | Description |
|------|-----|-------------|
| 0 | 01 | Metadata (profile) |
| 1 | 01 | Short text note |
| 3 | 02 | Follows list |
| 4 | 04 | Encrypted DM (deprecated) |
| 7 | 25 | Reaction |
| 1984 | 32 | Report |
| 30023 | 23 | Long-form content |
## Scope Boundaries
### Tag Patterns
```kotlin
// Reply threading (NIP-10)
tags = listOf(
listOf("e", rootEventId, relayUrl, "root"),
listOf("e", replyToId, relayUrl, "reply"),
listOf("p", authorPubkey)
)
### In Scope
- All NIP specifications and interactions
- Relay protocol and WebSocket message types
- Event signing and verification
- Key derivation and management
- Nostr-specific encryption (NIP-04, NIP-44)
- Quartz library architecture and classes
// Mentions
tags = listOf(
listOf("p", mentionedPubkey),
listOf("t", "hashtag")
)
```
### Out of Scope
- General Kotlin/Android development (use kotlin-multiplatform agent)
- UI implementation details (use compose-ui agent)
- Generic async patterns (use kotlin-coroutines agent)
- Non-Nostr networking
## Workflow
## Key References
- [NIPs Repository](https://github.com/nostr-protocol/nips)
- [NIP-01: Basic Protocol](https://github.com/nostr-protocol/nips/blob/master/01.md)
- [NIP-44: Versioned Encryption](https://github.com/nostr-protocol/nips/blob/master/44.md)
- Quartz source: `quartz/src/`
### 1. Assess Task
- Which NIP(s) are involved?
- Event creation or parsing?
- Relay communication?
- Crypto operations needed?
## Example Queries
### 2. Investigate
```bash
# Check existing NIP implementations
grep -r "kind.*=" quartz/src/
# Find event classes
grep -r "class.*Event" quartz/src/
# Check crypto usage
grep -r "Secp256k1\|Nip44\|sign\|verify" quartz/src/
```
- "How do I implement NIP-57 zap receipts?"
- "What's the correct tag structure for a reply?"
- "How does NIP-44 encryption work?"
- "Which event kind for a long-form article?"
- "How to verify a Schnorr signature in Quartz?"
### 3. Reference NIP Spec
```bash
# Fetch NIP specification
curl https://raw.githubusercontent.com/nostr-protocol/nips/master/XX.md
```
### 4. Implement
- Follow NIP spec exactly
- Use existing Quartz patterns
- Validate event structure
- Test signature verification
### 5. Verify
```bash
./gradlew :quartz:test
```
## Quartz Library Structure
```
quartz/src/commonMain/kotlin/
├── events/ # Event types per NIP
├── encoders/ # Bech32, hex encoding
├── crypto/ # Signing, encryption
├── relay/ # WebSocket communication
└── filters/ # Subscription filters
```
## Constraints
- Always follow NIP specifications exactly
- Use NIP-44 for new encryption (not NIP-04)
- Validate all incoming events (sig, id)
- Never log private keys or decrypted content
- Use existing Quartz classes when available
- Test with real relay responses when possible