The run's bare names, and one clock behind them (#104)

[jeremymanning]

{{ pipeline_id }}, {{ execution_id }} and {{ timestamp }} are registered by the runtime and render correctly. All three were reported as undefined variables — the same false positive execution.timestamp had before #454 declared it, just without the prefix.

Declaring them turned up the interesting part

{{ timestamp }} and {{ execution.timestamp }} name one thing, and disagreed:

bare: 2026-08-03T08:07:56.022350
exec: 2026-08-03T12:07:56.022379+00:00

Four hours and 29 microseconds apart, in one run. TemplateManager._setup_base_context seeds timestamp from datetime.now() when the manager is constructed — neither the run's start nor the same value, and in local time without a zone while the run context is UTC.

#454 consolidated seven execution dicts and missed this one because it hides under a different name. runtime/execution_state.py had a third reading of its own. Both now take the run's answer:

bare: 2026-08-03T12:08:23.773336+00:00
exec: 2026-08-03T12:08:23.773336+00:00
AGREE

Not every bare name

current_timestamp and current_date appear in the catalogue about as often as the real ones and are populated by nothing. They stay refused, and a test says so — declaring three names must not wave through every bare name.

name	validate	run
pipeline_id	✅ (was rejected)	✅
execution_id	✅ (was rejected)	✅
timestamp	✅ (was rejected)	✅
current_timestamp	✗	✗
current_date	✗	✗

Measured

	before	after
catalogue validating	48 / 117	50 / 117
blocking suite	725 passed	731 passed, 0 failed

Started this line of work at 9/117.

Mutations — three, all killed

mutation	tests that failed
stop overriding the constructed timestamp	the agreement test
data-flow validator forgets the bare names	3
declare names the runtime does not provide	4

One process note: git checkout <file> reverted uncommitted work mid-mutation-run, so the last "restored" check was against a broken tree. Caught it, restored, and re-ran both the focused suite and the full blocking suite from scratch rather than trusting the earlier numbers.

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