Blog post: SciML Small Grants two-year update

[ChrisRackauckas-Claude]

Summary

Adds a follow-up to the July 2025 year-one recap, walking through the eight grant completions since then by PR-merge order, plus program-level changes.

Completions covered (chronological by sciml.ai PR):

• Update Small Grants (Completion): "Simple Handwritten PDEs as ODEs" Benchmark Set" #171 Arjit Seth — Handwritten PDE benchmarks ($400)
• Small Grant Request+Completion: DAE Problem Benchmarks #168 Jayant Pranjal — NAND gate DAE ($100)
• LoopVectorization small grant completion #185 Maximilian Pochapski — LoopVectorization v1.12 ($200)
• Improve training performance of GPU backend in EvoTrees.jl completion #189 Aditya Pandey — EvoTrees.jl GPU ($2,250)
• Update small_grants.md, CurveFit.jl completed #207 Andreja Ristivojevic — CurveFit.jl ($300)
• Restore and update Bspline derivatives fix details #211 Utsav Ojha — DataInterpolations BSpline ($100)
• Dae grant completed #227 Singh Harsh Rahulkumar — eight DAE benchmarks ($800)
• NeuroTabModels.jl grant completion  #228 Aditya Pandey — NeuroTabModels.jl TabM ($1,800)

Also covers:

• December 2025 project-list refresh (Remove stale claims #191, Add new high priority small grants projects #192)
• February 2026 AI-usage policy note (Add a note on AI usage for the SciML Developer Programs #214)
• Five currently-active claims
• Updated lifetime payout totals (~$8.4-8.6k)

Please ignore this PR until reviewed by @ChrisRackauckas.

Test plan

• Verify the post renders correctly when Franklin builds the site
• Confirm all PR / issue / SciML repo links resolve
• Confirm contributor names and bounty amounts match small_grants.md

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