feat: add input validation/sanitization and error handling/logging in external bridge service endpoints

[slopefields]

Description

Adds input (body, header, query) validation/sanitization and error handling/logging across external bridge service endpoints

• Plaky feature name: "Add comprehensive, Add input validation and sanitization for all API endpoints, error handling and logging middleware across all API endpoints"
• Component, feature, or system affected: external bridge service routes and input validation middleware
• Purpose of change: improve endpoint reliability and request handling

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Changes

• Added standardized validation for request body, header, and query parameters
• Added standardized sanitization of incoming request data before processing
• Added/improved error logging for invalid requests and failures

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Related

Related PRs (not dependent):
deepiri-platform: Team-Deepiri/deepiri-platform#145
deepiri-auth-service: Team-Deepiri/deepiri-auth-service#31
deepiri-api-gateway: Team-Deepiri/deepiri-api-gateway#40

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Testing

• Ran endpoint checks with dummy requests and confirmed validation/sanitization behavior

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Workflow Checklist

• Branch is up to date with dev
• PR is from branch → dev
• PR title follows convention (feat:, fix:, refactor:, etc.)
• Plaky feature/bug name included above
• Tagged @Team-Deepiri/support-team
• Plaky feature moved to "Needs QA"

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Review Requests

@Team-Deepiri/support-team

[austinm2h35-sketch]

@Todd838 This is related to your assigned PR in deepiri-platform

[jrb00013]

@Todd838 What's going on with this one

[jrb00013]

@Todd838 let's finish this my man, you have to be proactive and reach out for help if you need help

[jrb00013]

@Todd838

[asheenhameeda8-cpu]

@Todd838 it's been a while finish this up