[Bug]: Incomplete emissions limits handler crashes

[DavidLikesLearning]

Bug Description

Some datasets, like the 26 zone CONUS at (https://datadocs.openenergyoutlook.org/en/latest/datasets.html) supporting DOI 10.1088/1748-9326/ae6c3d and other publications, involve emissions limits applied to fuel imports from other zones. When taking a subset of the a region with an emission limit, but not the import fuel, we have an inequality constraint with an empty left hand side. The handling for the warning in limits.py:944 crashes with a TypeError from expecting a 2-tuple where the logging module provides a 1-tupe with an 2-tuple inside.

Steps to Reproduce

1. Create a database with emission limits formatted like those of the CONUS 26z database, that is, acting on fuel imports.
2. Remove a relevant fuel import.
3. Run temoa

Code or Configuration Example

see bash file

repro.sh

Error Message / Stack Trace

--- Logging error ---
Traceback (most recent call last):
File ".../logging/init.py", line 1151, in emit
msg = self.format(record)
...
File ".../logging/init.py", line 400, in getMessage
msg = msg % self.args
TypeError: not enough arguments for format string
Call stack:
...
File ".../temoa/components/limits.py", line 944, in limit_emission_constraint
logger.warning(msg, (e, emission_limit))
Message: "Warning: No technology produces emission '%s', though limit was specified as %s.\n"
Arguments: (('sox', 1000.0),)

ERROR Rule failed when generating expression for Constraint
limit_emission_constraint with index ('utopia', 2000, 'sox', 'le'):
TypeError: not enough arguments for format string
ERROR Constructing component 'limit_emission_constraint' from data=None failed:
TypeError: not enough arguments for format string
ERROR An unhandled error occurred during the Temoa run.

Expected Behavior

Just a warning on the incomplete emissions constraint would rock.

Actual Behavior

TypeError crashes the run

Environment

Please provide details about your environment. This helps us reproduce the issue.

Operating System: macOS 26.2
Python Version: 3.13.5
Project Version: Temoa 4.0.0a2
Relevant Dependencies: Pyomo 6.10.0, highspy 1.14.0

Checklist

• I have searched existing issues to ensure this bug hasn't already been reported.
• I have provided clear steps to reproduce the bug.
• I have provided a minimal, reproducible code example (if applicable).
• I have included any relevant error messages or stack traces.
• I have described the expected and actual behavior.