CAMEL-23806: Split mina-sftp docs into focused sub-pages

[davsclaus]

Summary

• Split mina-sftp-component.adoc (3,176 lines) into focused sub-pages
• Main page: 602 lines (was 3,176) — URI format, options, examples, operational config
• Authentication sub-page: Password, public key, certificates, auth priority (208 lines)
• SSH Security sub-page: Host key verification, ciphers, key exchange, algorithm recommendations (346 lines)
• Migration sub-page: JSch migration guide, behavioral differences, deprecated params, logging (173 lines)
• Total across all pages: 1,329 lines (58% reduction from original)

Test plan

• Antora doc validation passes (build check)
• Maven build passes with no uncommitted changes (build 17 check)
• All xref links resolve correctly
• Sub-pages render correctly under others/ module

Claude Code on behalf of Claus Ibsen

Co-Authored-By: Claude Opus 4.6 noreply@anthropic.com

[github-actions]

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[github-actions]

🧪 CI tested the following changed modules:

• components/camel-mina-sftp
• docs

All tested modules (8 modules)

• Camel :: JBang :: MCP
• Camel :: JBang :: Plugin :: Route Parser
• Camel :: JBang :: Plugin :: TUI
• Camel :: JBang :: Plugin :: Validate
• Camel :: Launcher :: Container
• Camel :: MINA SFTP
• Camel :: YAML DSL :: Validator
• Camel :: YAML DSL :: Validator Maven Plugin

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