WIP: Backend/enhc: added metrics fir configPilot

[ratnadeep-99]

Type of Change

• Bugfix
• New feature
• Enhancement
• Refactoring
• Dependency updates

Description

Additional Changes

• This PR modifies the database schema (database migration added)
• This PR modifies dhall configs/environment variables

Motivation and Context

How did you test it?

Checklist

• I formatted the code and addressed linter errors ./dev/format-all-files.sh
• I reviewed submitted code
• I added unit tests for my changes where possible
• I added a CHANGELOG entry if applicable

Summary by CodeRabbit

• Chores
  • Enhanced internal metrics infrastructure with additional configuration pilot tracking capabilities for improved system observability.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: f86231fa-3153-460e-82ab-091f412967f2

📥 Commits

Reviewing files that changed from the base of the PR and between bfbf24d and d290618.

📒 Files selected for processing (5)

• lib/mobility-core/src/Kernel/Mock/App.hs
• lib/mobility-core/src/Kernel/Tools/Metrics/CoreMetrics.hs
• lib/mobility-core/src/Kernel/Tools/Metrics/CoreMetrics/Types.hs
• lib/mobility-core/src/Kernel/Types/Flow.hs
• lib/mobility-core/test/src/APIExceptions.hs

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Walkthrough

This PR extends the CoreMetrics system with two new Prometheus counters for tracking configuration pilot success and failure rates. The changes span type definitions, metric registration, implementation functions, and instance integrations across production, mocking, and test code paths.

Changes

Config Pilot Metrics Feature

Layer / File(s)	Summary
Type definitions and metric registration lib/mobility-core/src/Kernel/Tools/Metrics/CoreMetrics/Types.hs	Introduces ConfigPilotCounter type alias with a table_name label. Adds incrementConfigPilotSuccessCounter and incrementConfigPilotFailureCounter methods to the CoreMetrics typeclass and configPilotSuccessCounter/configPilotFailureCounter fields to CoreMetricsContainer. Updates registerCoreMetricsContainer to initialize both counters and adds registerConfigPilotSuccessCounter/registerConfigPilotFailureCounter registration functions.
Metrics implementation functions lib/mobility-core/src/Kernel/Tools/Metrics/CoreMetrics.hs	Implements incrementConfigPilotSuccessCounter' and incrementConfigPilotFailureCounter' functions that extract the metrics container from the reader context, apply the table name label, and increment the respective Prometheus counters.
Flow integration lib/mobility-core/src/Kernel/Types/Flow.hs	Extends the CoreMetrics instance for FlowR with the two new config pilot counter methods, delegating to the corresponding metrics implementation functions.
Mock and test stubs lib/mobility-core/src/Kernel/Mock/App.hs, lib/mobility-core/test/src/APIExceptions.hs	Adds no-op implementations of the two new counter increment methods to CoreMetrics instances in the mock (MockM e) and test (IO) contexts.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Suggested reviewers

• arjuna92

Poem

🐰 A pair of new counters hops into view,
Tracking pilot configs through and through,
Success and failure, both labeled with care,
Metrics flow smoothly through the layer-stacked air! 📊

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Title check	❓ Inconclusive	The title contains a typo ('fir' instead of 'for') and uses the vague label 'WIP' suggesting incompleteness, though it does reference the actual feature (config pilot metrics).	Correct the typo from 'fir' to 'for' and remove 'WIP' prefix if the PR is ready for review; otherwise clarify the work-in-progress status in the PR description.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch Backend/enhc/config-pilot-lib-shared-kernel

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