Create comprehensive GitHub Copilot instructions with validated commands, timeouts, and integrated original content

[Copilot]

This PR creates a comprehensive .github/copilot-instructions.md file that provides GitHub Copilot coding agents with detailed, validated instructions for working with the JioTV Go codebase, while preserving essential content from the original instructions.

Key Features

Validated Commands with Explicit Timeouts: Every command has been tested and timed with "NEVER CANCEL" warnings:

• Go build process: go build -o build/jiotv_go . (takes ~25 seconds, 90+ second timeout)
• Frontend build: cd web && npm run build (takes ~2 seconds, 30+ second timeout)
• Go tests: go test -v ./... (takes ~10 seconds, all passing, 60+ second timeout)
• Frontend tests: cd web && npm test -- --watchAll=false --ci (takes ~5 seconds, all passing, 30+ second timeout)

Enhanced Debug Configuration: Includes both JIOTV_DEBUG=true and JIOTV_LOG_TO_STDOUT=true environment variables for complete debug functionality and auto-reloading of templates.

Accurate Tech Stack Information:

• Go version reference updated to use go.mod specification
• TailwindCSS v3 and DaisyUI v4 version specifications
• Shaka Player specified for both HLS and DRM-protected DASH streaming

Integrated Original Content: Preserves essential sections from the original instructions:

• Project overview and directory structure explanation
• Monorepo architecture details
• Branching strategy (main/develop/feature/bugfix/hotfix)
• Basic development workflow guidance

Comprehensive Validation Scenarios: Specific test scenarios agents should run after making changes:

• CLI functionality validation (./build/jiotv_go --help, etc.)
• Server startup and HTTP response testing
• Frontend build and test validation

Complete Development Lifecycle Coverage: From bootstrap to deployment, including dependency management, testing frameworks, CLI usage, GitHub workflows, and coding conventions.

The instructions provide a complete guide that enables any GitHub Copilot agent to successfully work with this codebase while maintaining all the essential project knowledge from the original instructions.

Fixes #639.

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

[rabilrbl]

@copilot Address these changes.

[Copilot]

@copilot Address these changes.

All requested changes have been addressed in commit 7263890:

• Added JIOTV_LOG_TO_STDOUT=true to debug environment variables (lines 81, 174)
• Updated Go version reference to specify go.mod (line 111)
• Updated video player description for Shaka Player (line 120)
• Added version numbers for TailwindCSS v3 and DaisyUI v4 (line 118)
• Integrated original project overview and directory structure content
• Added branching strategy from original instructions

The file now combines the comprehensive validated instructions with the essential content from the original copilot instructions.

[Copilot]

Pull Request Overview

This PR creates comprehensive GitHub Copilot instructions that replace the existing basic documentation with detailed, validated development workflows and commands. The instructions provide GitHub Copilot agents with specific commands, timing expectations, and validation scenarios needed to work effectively with the JioTV Go codebase.

• Adds validated build and test commands with explicit timeout warnings and timing information
• Integrates debug configuration and comprehensive validation scenarios for CLI, server, and frontend functionality
• Preserves essential project knowledge while restructuring content for better agent usability

---

_{You can also share your feedback on Copilot code review for a chance to win a $100 gift card. Take the survey.}

[Copilot]

[nitpick] This directive may be too restrictive for GitHub Copilot agents. Consider softening the language to allow agents to use their broader knowledge when appropriate, such as 'Prioritize these instructions but supplement with additional context when needed for completeness.'

Suggested change

	**ALWAYS follow these instructions first and fallback to search or additional context gathering ONLY when the information here is incomplete or found to be in error.**
	**Prioritize these instructions, but supplement with additional context or search when needed for completeness or when the information here is incomplete or in error.**

[Copilot]

This contradicts the original documentation which specified Flowplayer for HLS streaming and Shaka Player for DRM-protected DASH streaming. The change removes mention of Flowplayer entirely, which may be inaccurate if both players are actually used in the codebase.

Suggested change

	- **Video Players:** Shaka Player for HLS and DRM-protected DASH
	- **Video Players:** Flowplayer for HLS streaming, Shaka Player for DRM-protected DASH

[Copilot]

The command should be docker-compose up (with hyphen) for older Docker Compose versions, or the file should specify that this requires Docker Compose v2+ for the space-separated syntax to work.

Suggested change

	docker compose up
	docker-compose up