Fix compilation issues and clean up code

- Add UUID error conversion to HammerworkError for MySQL compatibility
- Replace SQLx tuple queries with FromRow structs to avoid 16-field limit
- Add required-features to examples in Cargo.toml
- Clean up clippy warnings: remove needless borrows and use or_default()
- Remove unused imports from examples
- Fix MySQL implementation to use JobRow and DeadJobRow structs
- All tests now pass for both postgres and mysql features

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

Co-Authored-By: Claude <[email protected]>

Author: CodingAnarchy

.claude/settings.local.json

@@ -2,4 +2,4 @@
 Cargo.lock
 
 # CLAUDE
-.claude/local.settings.json
+.claude/settings.local.json

.gitignore

@@ -57,3 +57,15 @@ mysql = ["sqlx/mysql"]
 [dev-dependencies]
 tokio-test = { workspace = true }
 tracing-subscriber = { workspace = true }
+
+[[example]]
+name = "postgres_example"
+required-features = ["postgres"]
+
+[[example]]
+name = "mysql_example"
+required-features = ["mysql"]
+
+[[example]]
+name = "cron_example"
+required-features = ["postgres"]

Cargo.toml

@@ -2,15 +2,14 @@ use hammerwork::{
     cron::{CronSchedule, presets},
     job::Job,
     queue::JobQueue,
-    stats::{InMemoryStatsCollector, StatisticsCollector, JobEvent, JobEventType},
+    stats::{InMemoryStatsCollector, StatisticsCollector},
     worker::{Worker, WorkerPool},
     Result,
 };
 use serde_json::json;
 use sqlx::{Pool, Postgres};
 use std::sync::Arc;
 use tracing::info;
-use chrono::Utc;
 
 #[tokio::main]
 async fn main() -> std::result::Result<(), Box<dyn std::error::Error>> {

examples/cron_example.rs

@@ -1,15 +1,14 @@
 use hammerwork::{
     job::Job,
     queue::JobQueue,
-    stats::{InMemoryStatsCollector, StatisticsCollector, JobEvent, JobEventType},
+    stats::{InMemoryStatsCollector, StatisticsCollector},
     worker::{Worker, WorkerPool},
     Result,
 };
 use serde_json::json;
 use sqlx::{Pool, Postgres};
 use std::sync::Arc;
 use tracing::info;
-use chrono::Utc;
 
 #[tokio::main]
 async fn main() -> std::result::Result<(), Box<dyn std::error::Error>> {

examples/postgres_example.rs

@@ -11,6 +11,9 @@ pub enum HammerworkError {
     #[error("Serialization error: {0}")]
     Serialization(#[from] serde_json::Error),
 
+    #[error("UUID parsing error: {0}")]
+    UuidParsing(#[from] uuid::Error),
+
     #[error("Worker error: {message}")]
     Worker { message: String },