Consolidate stats and diagnostics formatting into utility module

[Zaid-maker]

Summary by CodeRabbit

• Documentation & Release

  • Updated README and project website with kernel version information and current development roadmap milestones.

• CI/CD & Quality Assurance

  • Configured Codecov bundle analysis with pull request notification thresholds to monitor code quality metrics and bundle size variations.
  • Enhanced kernel build system with comprehensive test coverage and improved diagnostics capabilities.

• Version Update

  • Kernel version updated to v0.0.20260330.

[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

📝 Walkthrough

Walkthrough

This PR introduces a new stats_util kernel module as a centralized utility for formatting diagnostics and statistics output. Existing code in interrupts.c and kernel.c is refactored to use the new formatting helpers instead of local string manipulation. Build rules, tests, version, and documentation are updated to reflect the new module structure.

Changes

Cohort / File(s)	Summary
New stats_util module kernel/src/stats_util.h, kernel/src/stats_util.c, kernel/tests/stats_util_test.c	Introduces new utility functions for formatting label-value pairs (text, decimal, hex 32-bit, hex 64-bit) and line-oriented outputs for vectors and memory-map entries. Tests verify output matches expected formatted strings.
Refactored diagnostics formatting kernel/src/interrupts.c, kernel/src/kernel.c	Replaces local buffer management and string-append logic with calls to stats_util.h formatting helpers. interrupts.c consolidates exception diagnostic construction; kernel.c refactors heap, PMM, and memmap output formatting.
Build and test infrastructure kernel/Makefile	Adds src/stats_util.c to kernel source list; extends test target to compile and run stats_util_test.c; extends coverage target to include coverage compilation and execution of the new test.
Version and CI configuration kernel/VERSION, codecov.yml	Updates kernel version from v0.0.20260329.4 to v0.0.20260330; adds codecov configuration defining CI wait behavior, bundle analysis thresholds, and warning levels.
Documentation README.md, site/docs.html, site/index.html	Updates kernel documentation to reference stats_util module; adds "Codecov Bundle Analysis (Ready)" section to README; updates homepage release version and roadmap to reflect completion of stats utility consolidation and new next task.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~23 minutes

Possibly related PRs

• Migrate heap backed allocation #1: Directly related—both PRs modify kernel memmap and line-formatting logic in kernel/src/kernel.c, with this PR migrating those paths to the new stats_util API.
• Extract sbuf library and integrate unit testing #3: Related through shared string-formatting infrastructure changes in the kernel build system; this PR's stats_util module depends on the sbuf API added in that PR.

Poem

🐰 A stats util springs to life,
Formatting helpers end the strife,
Diagnostics now align and gleam,
Shared utilities, a developer's dream!
Version hops from .4 to .30, 🎉

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'Consolidate stats and diagnostics formatting into utility module' directly and accurately reflects the main objective of the PR, which is to create a dedicated stats_util module for centralized formatting of stats and diagnostics output.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch shared-utils

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (7bda036) to head (f0df235).

Additional details and impacted files

@@            Coverage Diff            @@
##              main        #7   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            1         2    +1     
  Lines           34        72   +38     
=========================================
+ Hits            34        72   +38     

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