[erinecon]

What this PR does

Updates the README

Why we need it

Provides more details about the repository layout and contents, so that LLMs can more easily understand the project.

Checklist

• I followed the contributing guide
• I added or updated the documentation (if applicable)
• [N/A] I updated docs/changelog.md with user-relevant changes
• I added a change artifact for user-relevant changes in docs/release-notes/artifacts. If no change artifact is necessary, I tagged the PR with the label no-release-note.
• I used AI to assist with preparing this PR
• [N/A] I added or updated tests as needed (unit and integration)
• [N/A] If integration test modules are used: I updated the workflow configuration
  (e.g., in .github/workflows/integration_tests.yaml, ensure the modules list is correct)
• [N/A] If this is a Grafana dashboard: I added a screenshot of the dashboard
• [N/A] If this is Terraform: terraform fmt passes and tflint reports no errors
• [N/A] If this is Rockcraft: I updated the version

[github-actions]

Test results for commit 37b1b61

Test coverage for 37b1b61

Name           Stmts   Miss Branch BrPart  Cover   Missing
----------------------------------------------------------
src/charm.py      69      0     20      0   100%
----------------------------------------------------------
TOTAL             69      0     20      0   100%

Static code analysis report

Run started:2026-10-06 14:41:48.311242+00:00

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 509
  Total lines skipped (#nosec): 0
  Total potential issues skipped due to specifically being disabled (e.g., #nosec BXXX): 0

Run metrics:
  Total issues (by severity):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
  Total issues (by confidence):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
Files skipped (0):

[github-actions]

Test results for commit 37b1b61

Test coverage for 37b1b61

Name           Stmts   Miss Branch BrPart  Cover   Missing
----------------------------------------------------------
src/charm.py     159     62     52      5    57%   88-89, 112->114, 117-156, 164, 176-185, 212, 221-226, 234-247, 256-266, 283-293, 303-306, 325
----------------------------------------------------------
TOTAL            159     62     52      5    57%

Static code analysis report

Run started:2026-10-06 14:41:53.838542+00:00

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 800
  Total lines skipped (#nosec): 7
  Total potential issues skipped due to specifically being disabled (e.g., #nosec BXXX): 0

Run metrics:
  Total issues (by severity):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
  Total issues (by confidence):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
Files skipped (0):