Release 1.0.0-beta.20: Document soft-delete, displayText, fine-tuning…

[colinmxs]

… costs, CodeQL remediation, dependency refresh

Reliable document deletion, displayText for RAG-augmented messages, fine-tuning cost dashboard, assistant archive removal, and a full dependency refresh across Python, npm, and GitHub Actions.

Features:

• Soft-delete document lifecycle with background cleanup, retry logic, DynamoDB TTL backstop, and search filtering for mid-deletion docs
• Upload failure reporting endpoint for client-side error tracking
• DisplayText system preserving original user messages when RAG augmentation or file attachments modify the prompt sent to the agent
• Debug output toggle in chat preferences for prompt inspection
• Fine-tuning cost dashboard with per-user breakdowns and default monthly quota hours
• Shared conversation cascade deletion on session delete

Removals:

• Assistant archive functionality (ARCHIVED status, archive endpoint, include_archived parameter) replaced with single delete operation

Security & Code Quality:

• All CodeQL findings resolved (180 log injection fixes, 5 silent exception fixes, cyclic import elimination, 13 unused variables)
• Four Dependabot security patches (requests, picomatch, diff)

CI/CD:

• CDK synth skipped on PRs for app-api and frontend workflows
• scripts/common/** removed from frontend workflow path triggers
• GitHub Actions bumped (upload-artifact v7, download-artifact v8, setup-node v6, codeql-action latest)

Testing:

• Analog.js testing migration for frontend (vitest config removed)
• fast-check v4.6.0 added for property-based frontend tests
• 4,200+ lines of new backend tests for document deletion flows

Tooling:

• sync-version.sh now auto-updates README badge and current release text
• Versioning steering docs updated across Kiro, Cursor, and Claude
• Release notes steering doc added (fileMatch on RELEASE_NOTES.md)

Dependencies:

• Python: uvicorn 0.42.0, strands-agents 1.33.0, strands-agents-tools 0.3.0, aws-opentelemetry-distro 0.16.0, bedrock-agentcore 1.4.8, openai 2.30.0, cachetools downgraded to 6.2.4 for compatibility
• Frontend: Angular 21.2.6, @angular/cdk 21.2.4
• Infrastructure: aws-cdk group bumped, constructs bumped