feat(bi-service): Add BI services, enums, and Excel upload functionality

[ilramdhan]

Description

Add foundational BI protobuf contracts including enums, entity messages, BI service definitions, and Excel upload/audit RPC support for dashboard integration.

This PR introduces the initial BI proto architecture with:

• Core BI entity/message definitions
• Full RPC contracts for BI services
• Excel upload workflow services
• Config audit log RPCs
• Supporting upload/audit entities

Change Type

• ✨ New service/message
• ➕ Add field/RPC/enum value
• 🔄 Modify validation
• 📝 Documentation update
• ⚠️ Deprecation
• 🔧 Config/script changes

Proto Files Changed

• common/v1/common.proto
• finance/v1/uom.proto
• Other:
  • bi/v1/bi.proto
  • Additional BI-related proto definitions

Changes Made

• Add BI enums and core entity messages in bi.proto
• Add 4 BI services with complete RPC contracts
• Add BiUploadService RPCs:
  • DownloadUploadTemplate
  • ParseUpload
  • CommitUpload
  • CancelUpload
  • ListUploads
• Add ListConfigAudit RPC to DashboardService
• Add supporting messages:
  • BiUpload
  • UploadRowError
  • BiAuditEntry
• Add dashboard Excel upload workflow support
• Add config audit log feature contracts
• Sync latest main branch updates into feat/bi-foundation

Related Issues

Fixes #
Related to #

Breaking Change Check

Is this a breaking change?

• No - buf breaking passes
• Yes - Requires version bump

Breaking Change Evidence

# Output of buf breaking command
buf breaking --against '.git#branch=main'

Lint Check

# Output of buf lint
buf lint

Generated Code Preview (Optional)

// Generated Go code changes
// Added BI service clients and server interfaces
// Added upload/audit protobuf message structs
// Added RPC request/response generated types

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Pre-merge Checklist

• I have read and followed RULES.md
• buf format -w applied
• buf lint passes
• buf breaking passes
• Comments document new messages/fields
• REST mappings follow conventions
• Validation rules are complete
• Field numbers are logical

Impact Assessment

• Backend code regeneration required
• Frontend code regeneration required
• OpenAPI spec regeneration required

Reviewer Notes

• This PR focuses on BI proto foundation and service contracts only.
• Upload workflow RPCs are designed for dashboard Excel import flows.
• Audit RPCs support future dashboard configuration traceability.
• Includes merge sync from latest main.