v2.0.0 — Bridge-first dashboards + ETL refresh

Highlights

• Bridge-first dashboards with CSV fallback
• Canonical tech profiles + real history per source
• Updated ETL outputs, contracts, and public manifest
• New UI/UX enhancements and accessibility fixes
• Remote asset pipeline for GH Pages deploys

Tech

• DuckDB trend engine + Pandera quality gates
• Flutter Web dashboards with richer insights
• Weekly ETL automation

v2.0.0-rc3 - Backend V2 Stabilization (Pre-release)

🚧 Backend V2 Release Candidate (rc3)

This pre-release validates the V2 backend foundation before final v2.0.0.

Included in rc3

• Data product contract and run manifest model
• Dual write path (datos/latest + datos/history)
• Quality gate with severity routing (critical, warning, info)
• DuckDB trend engine with V1/V2 equivalence checks
• Parallel weekly ETL workflow with artifacts and conditional publish
• Frontend bridge assets (history_index.json, trend_score_history.json)
• Safe sync strategy with mixed source mode (latest + legacy fallback)

Validation status

• Test suite: 133 passed
• ETL aggregate/publish workflow: successful
• Main branch CI workflows: green

Operational notes

• Existing CSV frontend flow remains compatible
• Bridge JSON is additive (non-breaking)
• Required secrets for full ETL: GH_PAT, STACKOVERFLOW_KEY, REDDIT_CLIENT_ID, REDDIT_CLIENT_SECRET
• Temporary dependency audit exception: CVE-2025-14009 (nltk) until upstream fix is available

Exit criteria for final v2.0.0

• Frontend improvements completed
• 4 consecutive weekly runs without critical failures
• SLO checks validated

v1.0.0 - Production Release

🚀 Tech Trends 2025 - v1.0.0

Features

• ETL Pipeline: GitHub, StackOverflow, Reddit data extraction
• BaseETL Architecture: OOP with Template Method pattern
• Trend Score: Composite index (GitHub 40% + SO 35% + Reddit 25%)
• Data Validation: Column checks + null detection
• Testing: 40 pytest tests with API mocking
• Flutter Web Dashboard: 4 interactive views with fl_chart
• CI/CD: GitHub Actions (tests on push + auto deploy)
• GitHub Pages: Live dashboard at https://sam-24-dev.github.io/Technology-trend-analysis-platform/

Tech Stack

Python 3.9+ · pandas · NLTK · pytest · Flutter Web · fl_chart · GitHub Actions