Add log viewer for relay owners (v0.37.3)

- Add in-memory ring buffer for log storage (configurable via ORLY_LOG_BUFFER_SIZE)
- Add owner-only log viewer in web UI with infinite scroll
- Add log level selector with runtime level changes
- Add clear logs functionality
- Update Blossom refresh button to use 🔄 emoji style

Files modified:
- pkg/logbuffer/buffer.go: Ring buffer implementation
- pkg/logbuffer/writer.go: Buffered writer hook for log capture
- app/config/config.go: Add ORLY_LOG_BUFFER_SIZE env var
- app/handle-logs.go: Log API handlers
- app/server.go: Register log routes
- app/web/src/LogView.svelte: Log viewer component
- app/web/src/App.svelte: Add logs tab (owner-only)
- app/web/src/BlossomView.svelte: Update refresh button style

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/config/config.go

@@ -24,6 +24,7 @@ import (
 	"go-simpler.org/env"
 	lol "lol.mleku.dev"
 	"lol.mleku.dev/chk"
+	"next.orly.dev/pkg/logbuffer"
 	"next.orly.dev/pkg/version"
 )
 
@@ -43,6 +44,7 @@ type C struct {
 	DBIndexCacheMB      int           `env:"ORLY_DB_INDEX_CACHE_MB" default:"256" usage:"Badger index cache size in MB (improves index lookup performance)"`
 	DBZSTDLevel         int           `env:"ORLY_DB_ZSTD_LEVEL" default:"1" usage:"Badger ZSTD compression level (1=fast/500MB/s, 3=default, 9=best ratio, 0=disable)"`
 	LogToStdout         bool          `env:"ORLY_LOG_TO_STDOUT" default:"false" usage:"log to stdout instead of stderr"`
+	LogBufferSize       int           `env:"ORLY_LOG_BUFFER_SIZE" default:"10000" usage:"number of log entries to keep in memory for web UI viewing (0 disables)"`
 	Pprof               string        `env:"ORLY_PPROF" usage:"enable pprof in modes: cpu,memory,allocation,heap,block,goroutine,threadcreate,mutex"`
 	PprofPath           string        `env:"ORLY_PPROF_PATH" usage:"optional directory to write pprof profiles into (inside container); default is temporary dir"`
 	PprofHTTP           bool          `env:"ORLY_PPROF_HTTP" default:"false" usage:"if true, expose net/http/pprof on port 6060"`
@@ -178,6 +180,12 @@ func New() (cfg *C, err error) {
 	if cfg.LogToStdout {
 		lol.Writer = os.Stdout
 	}
+	// Initialize log buffer for web UI viewing
+	if cfg.LogBufferSize > 0 {
+		logbuffer.Init(cfg.LogBufferSize)
+		logbuffer.SetCurrentLevel(cfg.LogLevel)
+		lol.Writer = logbuffer.NewBufferedWriter(lol.Writer, logbuffer.GlobalBuffer)
+	}
 	lol.SetLogLevel(cfg.LogLevel)
 	return
 }