Add `--follow` to `tower apps logs`

[burakdede]

Blocks any network-resilience log-stream severing use cases and normal “tail -f”-like workflows.

Repro

• tower apps logs --help (no --follow option).
• tower apps logs -f <app>#<run> (fails with unexpected argument).

Expected

• tower apps logs --follow streams logs until run completes or Ctrl+C.
• https://docs.tower.dev/docs/reference/api/stream-run-logs documents a streaming logs endpoint the CLI could expose.

Actual

• Command only performs a single log fetch.

Sample reproducible job

• tower run --dir tower-examples/pressure-network -p DURATION_SECS=20 -p INTERVAL_SECS=2 --detached
• tower apps logs pressure-network#<run>
• wait ~8s
• tower apps logs pressure-network#<run>

Sample script

import os
import time

def main():
    duration = int(os.environ.get("DURATION_SECS", "60"))
    interval = float(os.environ.get("INTERVAL_SECS", "1"))
    start = time.time()
    idx = 0
    while True:
        elapsed = time.time() - start
        if elapsed >= duration:
            break
        idx += 1
        print(f"LOG_TICK={idx} elapsed={elapsed:.2f}s")
        time.sleep(interval)
    print("LOG_DONE")

if __name__ == "__main__":
    main()

Sample output

first fetch

• LOG_TICK=1 elapsed=0.00s
• LOG_TICK=2 elapsed=2.00s

second fetch, later ticks appear only after re-run

• LOG_TICK=3 elapsed=4.00s
• LOG_TICK=4 elapsed=6.00s