When a timezone is configured, `now` is tz-aware local time.
The comparison stripped tzinfo with `.replace(tzinfo=None)`,
producing naive local time, but `scheduled_date` is stored as
naive UTC. For users east of UTC this causes tasks to appear
expired prematurely; for users west they linger past due time.
Use `_to_utc_naive(now)` to convert to the same reference frame.
TaskScheduler.start() aborts stale TaskRun rows but never advanced
ScheduledTask.next_run. Across a restart the in-process _executing set
is empty, so the first post-restart _check_due_tasks() call dispatches
every task whose next_run is still in the past — and so does every
subsequent poll, until the task's regular _execute_task path finally
runs compute_next_run and pushes it forward.
start() now queries active tasks with next_run < now and pushes each
one to now + 60s. The first poll after restart sees them as not-yet-due,
the task runs once normally, and compute_next_run puts the schedule
back on its real cadence. Paused and not-yet-due tasks are left alone.
The validator test was rewritten as a regression test asserting the
opposite of the bug it originally demonstrated, plus two narrower cases
to lock down the filter (only active+overdue is touched).
* fix: coerce null endpoint_url when delivering task result to a session
* fix: also coerce null model so the session insert satisfies NOT NULL
* test: cover task session delivery on an empty database
* feat(web-fetch): add web_fetch tool to read a specific URL's content
* test(web-fetch): add SSRF coverage and fail closed on empty DNS resolution
Add explicit SSRF regression tests for the web_fetch path covering
loopback, private LAN ranges, link-local/metadata, IPv6 private/local,
redirect-into-private, and unsupported schemes. Harden _public_http_url
to fail closed when a hostname resolves to no addresses.
