docs: update README and SECURITY for Twenty CRM sync, add CSV templates and scripts

templates/company.csv

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+Id,Name,Domain Name / Link URL,Domain Name / Link Label,Domain Name / Secondary Links,Created by / Source,Created by / Workspace Member,Created by / Name,Created by / Context,Linkedin / Link URL,Linkedin / Link Label,Linkedin / Secondary Links,Last contact,Last contact item
+c1a81b56-fa94-4d03-967a-88da331f8228,Roivant,https://roivant.com,Roivant,[],AGENT,6fa482f3-cebd-4bfa-a096-d454697afc54,Prad Nukala,,https://www.linkedin.com/company/roivant,Roivant,[],,

templates/dashboard.csv

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+Id,Title,Created by / Source,Created by / Workspace Member,Created by / Name,Created by / Context,Creation date,Last update
+f31ecf3b-87d3-4e8a-a84b-b6f0f3f8c7e2,My First Dashboard,SYSTEM,,System,{},2026-08-15T19:49:14.993Z,2026-08-15T19:49:14.993Z

templates/note.csv

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+Id,Title,Body / BlockNote,Body / Markdown,Created by / Source,Created by / Workspace Member,Created by / Name,Created by / Context,Creation date
+3b92cb37-85a0-4515-955a-c73a50a733e6,,,,MANUAL,6fa482f3-cebd-4bfa-a096-d454697afc54,Prad Nukala,{},2026-08-26T15:34:28.802Z

templates/opportunity.csv

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+Id,Position,Salary / Amount,Salary / Currency,Created by / Source,Created by / Workspace Member,Created by / Name,Created by / Context,Deadline,Company Id,Point of Contact Id,Last contact item,Last contact,Score,URL / Link URL,URL / Link Label,URL / Secondary Links,Verdict,Location / Address 1,Location / Address 2,Location / City,Location / State,Location / Country,Location / Post Code,Location / Latitude,Location / Longitude
+f4d006dc-7cb0-4649-a3ca-732bb1e89961,Founding Engineer — Stackbirds,0,,AGENT,6fa482f3-cebd-4bfa-a096-d454697afc54,Prad Nukala,,,d214fab2-accf-4b29-98c3-09c051ae6e61,,,,70,https://www.linkedin.com/jobs/view/founding-engineer-at-stackbirds-4455351694,Founding Engineer,[],GOOD_FIT,,,San Francisco,CA,,,,

templates/person.csv

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+Id,Name / First Name,Name / Last Name,Emails / Primary Email,Emails / Additional Emails,Created by / Source,Created by / Workspace Member,Created by / Name,Created by / Context,Company Id,Phones / Primary Phone Number,Phones / Primary Phone Country Code,Phones / Primary Phone Calling Code,Phones / Additional Phones,Creation date,Job Title,Linkedin / Link URL,Linkedin / Link Label,Linkedin / Secondary Links,Last inbound,Last contact,Last meeting Id,Last contact item,Last contact by Id,Last outbound,Last email Id
+7a93d1e5-3f74-4945-8a65-d7f996083f72,Ivan,Zhao,zhao@notion.com,[],SYSTEM,,System,,06290608-8bf0-4806-99ae-a715a6a93fad,882261739,,‍+1,[],2026-08-15T19:49:14.993Z,,,,[],,,,,,,

templates/task.csv

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+Id,Title,Status,Created by / Source,Created by / Workspace Member,Created by / Name,Created by / Context,Due Date,Assignee Id,Body / BlockNote,Body / Markdown,Creation date
+68892d48-7f2c-49c5-a399-36e255301b21,,TODO,MANUAL,6fa482f3-cebd-4bfa-a096-d454697afc54,Prad Nukala,{},,,,,2026-08-26T15:34:41.441Z

templates/workflow.csv

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+Id,Name,Statuses,Last update,Created by / Source,Created by / Workspace Member,Created by / Name,Created by / Context
+33bfd30b-5558-53a8-866c-b679ce0c0bf9,Create company when adding a new person,"[""ACTIVE""]",2026-08-15T19:49:14.993Z,SYSTEM,,System,{}