provide time info from realization file

[mkarim-rtx]

https://jira.nextgenwaterprediction.com/browse/NGWPC-10207
https://jira.nextgenwaterprediction.com/browse/NGWPC-10194
https://jira.nextgenwaterprediction.com/browse/NGWPC-10157

Centralizing time control via NGen across UEB, TopoFlow-Glacier, and Noah-OWP

This task standardizes how simulation time (start, end, timestep) is handled across multiple models—UEB, TopoFlow-Glacier, and Noah-OWP-Modular—by shifting control from model-specific configuration files to the NGen Framework.

Objective
Ensure all models:

Ignore hardcoded config time (start/end/dt)
Use NGen-provided realization time dynamically via BMI
Maintain compatibility with existing workflows with minimal code changes

What was done

1. NGen (Core Change)
   Added logic to pass realization time through BMI inputs:
   start_utime
   end_utime
   dt_seconds
   Ensures a single source of truth for time control
   Applies uniformly across all BMI models
   PR: provide time info from realization file by mkarim-rtx · Pull Request #172 · NGWPC/ngen

2. UEB
   Replaced reliance on config timing with runtime override
   Implemented:
   Temporary rewrite of UEB control file before Initialize()
   Injected NGen time into rewritten file
   Result:
   UEB runs using NGen time without modifying original config
   Zero changes required in UEB internal physics
   PR: Taking time info from ngen by mkarim-rtx · Pull Request #14 · NGWPC/ueb_bmi

3. TopoFlow-Glacier
   Added full BMI-level time handling:
   adapter_set_realization_times()
   _apply_realization_time_from_strings()
   Logic:
   Prefer NGen time if provided
   Fallback to config only if missing
   Result:
   Fully decoupled from YAML time configuration
   Works seamlessly with NGen forcing window

PR: Pull requests · NGWPC/topoflow-glacier

4. Noah-OWP
   Removed dependency on internal RunModule time handling
   Implemented:
   BMI-side apply_realization_time_config logic
   Updated NamelistRead.f90:
   Made startdate and enddate optional
   Added placeholder defaults instead of fatal error
   Result:
   Model initializes without config time
   Real time applied later via BMI inputs from NGen
   PR: updates to use time fron NGEN by mkarim-rtx · Pull Request #8 · NGWPC/noah-owp-modular

Why this change was needed

Before
Each model:
Required its own config-based time
Could conflict with NGen realization
Caused errors or inconsistencies

After
NGen controls time globally
Models become:
Consistent
Easier to integrate
Less error-prone

Final Outcome
All three models now:
Use NGen-driven time
Do not require config start/end dates
Maintain backward compatibility via fallbacks
Eliminates duplicated logic and synchronization issues across models

[kyle-larkin]

We do not want to hardcode ngen to have to know what model is being used. Do not merge this as is.

[mkarim-rtx]

We do not want to hardcode ngen to have to know what model is being used. Do not merge this as is.

@kyle-larkin @jswade-rtx I have made ngen model agnostic. Please review.

[jswade-rtx]

I tested noah-owp, ueb, and topoflow-glacier with the new updates and confirmed they could be run without time info in the configs