docs: add exploration report for library structure and expansion avenues

[erivlis]

Exploration report reviewing docs/, src/, and recipes/ directories, analyzing library architecture against PRINCIPLES.md, and detailing strategic avenues for library expansion.

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PR created automatically by Jules for task 5499640190093452843 started by @erivlis

[google-labs-jules]

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[deepsource-io]

DeepSource Code Review

We reviewed changes in 5234dbd...994c0cf on this pull request. Below is the summary for the review, and you can see the individual issues we found as inline review comments.

See full review on DeepSource ↗

PR Report Card

Overall Grade

Security   Reliability   Complexity   Hygiene

Code Review Summary

Analyzer	Status	Updated (UTC)	Details
Code coverage		Aug 29, 2026 9:43p.m.	Review ↗
Python		Aug 29, 2026 9:12p.m.	Review ↗

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

View in Codacy

🟢 Coverage ∅ diff coverage · +0.00% coverage variation

Metric	Results
Coverage variation	✅ +0.00% coverage variation (-1.00%)
Diff coverage	✅ ∅ diff coverage

View coverage diff in Codacy

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (5234dbd)	1229	1229	100.00%
Head commit (994c0cf)	1229 (+0)	1229 (+0)	100.00% (+0.00%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#5)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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TIP This summary will be updated as you push new changes.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (5234dbd) to head (994c0cf).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff            @@
##              main        #5   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           26        26           
  Lines         1229      1229           
  Branches       168       168           
=========================================
  Hits          1229      1229           

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

[codspeed-hq]

Merging this PR will not alter performance

✅ 51 untouched benchmarks

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_{Comparing docs/exploration-report-5499640190093452843 (994c0cf) with main (5234dbd)}