✨ Add seed and seed-slow targets to Makefile and Taskfile for generating sample telegrams. Enhance documentation with usage examples for continuous slow seeding and configuration options. This allows for easier testing and monitoring of message delivery in development environments.

docs/dev-guide.md

@@ -94,6 +94,56 @@ GO_ENV=dev go run ./cmd/seed-telegrams \
   --status random
 ```
 
+### Using Makefile/Taskfile Tasks
+
+For convenience, you can use the provided tasks:
+
+```bash
+# Quick seed (10 messages, Core NATS)
+make seed
+# or
+task seed
+
+# Continuous slow seeding (until Ctrl-C, JetStream by default)
+make seed-slow
+# or
+task seed-slow
+
+# Customize slow seeding
+make seed-slow INTERVAL_MIN=3s INTERVAL_MAX=8s CATEGORY=ARR
+task seed-slow INTERVAL_MIN=1s INTERVAL_MAX=2s STATUS=parsed
+```
+
+### Continuous Slow Seeding
+
+For long-running tests and monitoring, use the `seed-slow` task to continuously send messages at a configurable interval until you press Ctrl-C:
+
+```bash
+# Default: 2-5 second intervals, JetStream mode
+make seed-slow
+
+# Custom interval and category
+make seed-slow INTERVAL_MIN=5s INTERVAL_MAX=10s CATEGORY=DEP
+
+# Use Core NATS instead of JetStream
+make seed-slow USE_JS=false INTERVAL_MIN=1s INTERVAL_MAX=3s
+```
+
+This is equivalent to running:
+```bash
+go run ./cmd/seed-telegrams \
+  --nats-url nats://localhost:4222 \
+  --jetstream \
+  --stream TELEGRAM \
+  --js-subject telegram.serial \
+  --mode interval \
+  --interval-min 2s \
+  --interval-max 5s \
+  --count 0
+```
+
+Setting `--count 0` makes it run indefinitely until interrupted.
+
 ### Common Options
 
 - `--postgres-url`: Insert rows into `aviation.telegrams_raw` (omit to skip DB writes)
@@ -104,6 +154,9 @@ GO_ENV=dev go run ./cmd/seed-telegrams \
 - `--jetstream`: Enable JetStream publishing (requires `--stream` and `--js-subject`)
 - `--stream`: JetStream stream name (default: `TELEGRAM`)
 - `--js-subject`: Subject within the JetStream stream
+- `--mode`: Seed mode (`burst|interval|mixed`)
+- `--interval-min` / `--interval-max`: Time interval between messages in interval/mixed modes
+- `--count`: Number of messages to send (0 = infinite, until Ctrl-C)
 
 ### Inspecting Messages