docs: credit Lling0000 as current owner and RAG module author

[Lling0000]

Summary

• Add Lling0000 to the Maintainer section of CONTRIBUTORS.md as the current repository owner and author of the knowledge RAG module merged in feat: add knowledge RAG with hybrid retrieval and source citations #41.
• The existing study8677 entry (Creator, maintainer, and product lead) is unchanged.

Test plan

• Docs-only change: one line added to CONTRIBUTORS.md, no code touched.

🤖 Generated with Claude Code

[github-actions]

Trustabl scan

Lling0000/OpenCMO · docs/credit-lling0000 · 44 findings

Readiness goes from 95 → 100 (+5)

Readiness now   🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩   95 / 100

Projected if all findings resolved   🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩   100 / 100   +5

Findings by severity

Severity	Count
critical	0	▱▱▱▱▱▱▱▱
high	3	▰▱▱▱▱▱▱▱
medium	5	▰▱▱▱▱▱▱▱
low	35	▰▰▰▰▰▰▰▰
info	1	▱▱▱▱▱▱▱▱

Projected headroom — estimate, not a re-scan

Fix scope	Readiness	Δ
Fix critical	95 → 95	+0
+ high	95 → 97	+2
+ medium	97 → 98	+1
+ low	98 → 100	+2
+ info (all)	100 → 100	+0

Projected by re-applying trustabl's own scoring with the listed findings resolved (nothing new introduced). Treat as guidance, not a guarantee.

Metric	Value
Repository	Lling0000/OpenCMO
Branch	docs/credit-lling0000
Readiness score	95
Risk score	5
Findings	44
Max severity	high
Native exit	1
Rules version	184118273e833a55b83be9a77da993b616cd0b1588c66610f55c328b82243503

❌ Failed

Gate	Threshold	Detected	Result
trustabl native	exit 0	exit 1	❌

Failed due to: trustabl gated (medium+ or --strict)