feat: Explicitly export IO schema field order

[linusseelinger]

Description of changes

Export IO schemas' field declaration order in JSON. This is needed for downstream clients to reliably reproduce the order of inputs/outputs as declared in the schema (e.g. Postgres will scramble JSON field order).

Testing done

Local, CI

[codecov]

Codecov Report

❌ Patch coverage is 92.00000% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.16%. Comparing base (39b27ce) to head (89ae685).

Files with missing lines	Patch %	Lines
tesseract_core/runtime/schema_generation.py	92.00%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #595      +/-   ##
==========================================
+ Coverage   77.12%   77.16%   +0.04%     
==========================================
  Files          32       32              
  Lines        4502     4519      +17     
  Branches      741      743       +2     
==========================================
+ Hits         3472     3487      +15     
  Misses        727      727              
- Partials      303      305       +2     

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[PasteurBot]

Benchmark Results

Benchmarks use a no-op Tesseract to measure pure framework overhead.

🚀 1 faster, ⚠️ 1 slower, ✅ 34 unchanged

Notable changes

Benchmark	Baseline	Current	Change	Status
cli/apply_100,000	1734.849ms	1969.412ms	+13.5%	⚠️ slower
decoding/base64_100,000	0.826ms	0.680ms	-17.7%	🚀 faster

Full results

Benchmark	Baseline	Current	Change	Status
api/apply_1,000	0.502ms	0.498ms	-0.7%	✅
api/apply_100,000	0.507ms	0.502ms	-1.0%	✅
api/apply_10,000,000	0.507ms	0.498ms	-1.6%	✅
cli/apply_1,000	1792.650ms	1925.915ms	+7.4%	✅
cli/apply_100,000	1734.849ms	1969.412ms	+13.5%	⚠️ slower
cli/apply_10,000,000	2011.851ms	2000.930ms	-0.5%	✅
decoding/base64_1,000	0.029ms	0.029ms	-0.3%	✅
decoding/base64_100,000	0.826ms	0.680ms	-17.7%	🚀 faster
decoding/base64_10,000,000	73.447ms	74.132ms	+0.9%	✅
decoding/binref_1,000	0.186ms	0.183ms	-1.3%	✅
decoding/binref_100,000	0.245ms	0.247ms	+0.6%	✅
decoding/binref_10,000,000	9.522ms	9.958ms	+4.6%	✅
decoding/json_1,000	0.098ms	0.099ms	+0.7%	✅
decoding/json_100,000	9.459ms	9.540ms	+0.9%	✅
decoding/json_10,000,000	1143.058ms	1134.744ms	-0.7%	✅
encoding/base64_1,000	0.027ms	0.027ms	+0.0%	✅
encoding/base64_100,000	0.143ms	0.143ms	+0.1%	✅
encoding/base64_10,000,000	24.257ms	24.314ms	+0.2%	✅
encoding/binref_1,000	0.278ms	0.273ms	-1.9%	✅
encoding/binref_100,000	0.449ms	0.452ms	+0.7%	✅
encoding/binref_10,000,000	18.385ms	18.122ms	-1.4%	✅
encoding/json_1,000	0.145ms	0.142ms	-2.1%	✅
encoding/json_100,000	15.035ms	15.935ms	+6.0%	✅
encoding/json_10,000,000	1551.427ms	1543.787ms	-0.5%	✅
http/apply_1,000	3.422ms	3.135ms	-8.4%	✅
http/apply_100,000	9.927ms	9.103ms	-8.3%	✅
http/apply_10,000,000	692.178ms	688.753ms	-0.5%	✅
roundtrip/base64_1,000	0.058ms	0.058ms	-0.2%	✅
roundtrip/base64_100,000	0.783ms	0.768ms	-1.9%	✅
roundtrip/base64_10,000,000	98.415ms	98.006ms	-0.4%	✅
roundtrip/binref_1,000	0.481ms	0.473ms	-1.7%	✅
roundtrip/binref_100,000	0.694ms	0.711ms	+2.5%	✅
roundtrip/binref_10,000,000	28.543ms	27.805ms	-2.6%	✅
roundtrip/json_1,000	0.250ms	0.246ms	-1.3%	✅
roundtrip/json_100,000	22.608ms	22.327ms	-1.2%	✅
roundtrip/json_10,000,000	2679.587ms	2678.705ms	-0.0%	✅

• Runner: Linux 6.17.0-1013-azure x86_64