Add Nodle name service lookup runbook and script

[aliXsed]

Summary

Item	Path
AI agent runbook	src/nameservice/doc/nodle-name-service-lookup.md
Lookup script	ops/lookup_nodle_name.sh

• Documents production Nodle/Click name service contracts and the https://indexer.nodleprotocol.io GraphQL API for resolving names ↔ owners ↔ X handles (com.x / com.twitter).
• Notes that indexer account ids must be lowercase (checksummed addresses return null).
• Adds ops/lookup_nodle_name.sh for quick CLI lookups by --address or --name.

Test plan

• Verified account query against indexer for 0x98f3f23798deaa759ad1d5334a1c1d6acb87b717 returns girlnext.nodl.eth with X handle @_GirlNextDoo_R
• Verified name query for girlnext.nodl.eth returns matching owner and handle
• Ran ./ops/lookup_nodle_name.sh --address … and --name girlnext.nodl.eth successfully

Made with Cursor

[github-actions]

LCOV of commit 899ea70 during checks #729

Summary coverage rate:
  lines......: 25.7% (771 of 3001 lines)
  functions..: 22.3% (105 of 470 functions)
  branches...: 27.5% (140 of 509 branches)

Files changed coverage rate: n/a