[Fusion] Added post-merge validation rule "InputFieldReferencesInaccessibleTypeRule"

[danielreynolds1]

Summary of the changes (Less than 80 chars)

• [Fusion] Added post-merge validation rule "InputFieldReferencesInaccessibleTypeRule".

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🚫 Blocked by:

• https://github.com/graphql/composite-schemas-spec/issues/169

[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 0.00%. Comparing base (860a87c) to head (ca6a694). :warning: Report is 1 commits behind head on main.

Additional details and impacted files

@@     Coverage Diff      @@
##   main   #7992   +/-   ##
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[github-actions[bot]]

🚀 Performance Test Results

📊 Response Time

Current

Test	Min	Med	Max	Avg	P90	P95	P99
Single Fetch	0.76ms	1.54ms	15.84ms	2.06ms	3.35ms	4.43ms	9.29ms
DataLoader	1.67ms	3.13ms	70.45ms	4.35ms	7.90ms	11.35ms	18.64ms

Baseline

Test	Min	Med	Max	Avg	P90	P95	P99
Single Fetch	0.76ms	1.64ms	22.30ms	2.06ms	3.20ms	4.24ms	8.83ms
DataLoader	1.66ms	3.07ms	56.38ms	3.80ms	6.23ms	8.34ms	14.72ms

Change vs Baseline

Test	Min	Med	Max	Avg	P90	P95	P99
Single Fetch	✅ (0.11% worse)	🎉 (6.03% better)	🎉 (28.96% better)	✅ (0.31% better)	✅ (4.70% worse)	✅ (4.51% worse)	⚠️ (5.21% worse)
DataLoader	✅ (0.52% worse)	✅ (1.87% worse)	⚠️ (24.96% worse)	⚠️ (14.45% worse)	⚠️ (26.82% worse)	⚠️ (36.20% worse)	⚠️ (26.66% worse)

⚡ Throughput

Test	Metric	Current	Baseline	Change
Single Fetch	Requests/sec	394.49 req/s	394.51 req/s	✅ (0.00% worse)
DataLoader	Requests/sec	393.41 req/s	393.53 req/s	✅ (0.03% worse)

🎯 Reliability

Test	Error Rate
Single Fetch	0.00% ✅
DataLoader	0.00% ✅

🔍 Analysis

⚠️ Performance regression detected. Response times have increased significantly compared to baseline.

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Run 19034046020 • Commit b77ada5 • Mon, 03 Nov 2025 12:20:07 GMT