[docs] Add Google-style docstrings for Signature.prepend/append/inser…

…t/delete (#8945)

* docs(signature): add Google-style docstring for with_instructions (refs #8926)

* docs(signature): docstrings for prepend/append/insert/delete (Fixes #8944)

* docs(signature): unify backticks and finalize with_instructions docstring per style guide

* docs(signature): fix mkdocs rendering and make example runnable per review feedback

* Single backtick: instructions.

* unify backticks and remove ambigous statements.

* docs(signature): add runnable code examples for prepend, append, insert, and delete; completes Signature class docstrings (fixes issues  #8942 and #8944)

* Removed double backticks.

* Removes the unnecessary assert statements.

* Fixes the unintentional formatting change.

* docs(signature): clarify insert docstring per reviewer feedback

* nit

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Co-authored-by: Netsanet Gebremedhin <[email protected]>
Co-authored-by: chenmoneygithub <[email protected]>

Use importorskip for PIL in ReAct test (#8870)

Adjust reasoning model token requirement (#8750)

Validate GEPA metric signature (#8697)

* Validate GEPA metric signature

* Update gepa.py

* Update gepa.py

Update use-cases.md (#8646)

Update GEPA's reflection_lm (#8633)

* Update reflection_lm

* Ruff

update deduplicate (#8623)

Since python 3.6 Dict are ordered, the former source has been updated to new method of deduplication in 2017.  
The gain is quite significant for example:
FUNCTION                   MEAN (ms)       MEDIAN (ms)
dict version (new)           124.5                  123.6
set version   (old)            165.5                  171.8

Update pyproject.toml

update doc (#8476)

Remove community retrievers (#8073)

* remove community retrievers

* lint