chore: install openagent opencode

Signed-off-by: Dmytro Stanchiev <git@dmytros.dev>

.opencode/context/project/project-context.md

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+<!-- Context: project/project-context | Priority: low | Version: 1.0 | Updated: 2026-02-15 -->
+
+<!-- DEPRECATED: 2026-01-12 - Replaced by project-intelligence/technical-domain.md -->
+<!-- REPLACED BY: ../project-intelligence/technical-domain.md -->
+
+# ⚠️ DEPRECATED: OpenCode Agent System Project Context
+
+> ⛔ This file is deprecated. See `project-intelligence/technical-domain.md` for the current technical domain documentation.
+
+## Technology Stack
+
+**Primary Language:** TypeScript
+**Runtime:** Node.js/Bun
+**Package Manager:** npm/pnpm/yarn
+**Build Tools:** TypeScript Compiler (tsc)
+**Testing:** Jest/Vitest (if configured)
+**Linting:** ESLint (if configured)
+
+## Project Structure
+
+```
+.opencode/
+├── agent/           # AI agents for specific tasks
+│   ├── subagents/   # Specialized subagents
+│   └── *.md         # Primary agents
+├── command/         # Slash commands
+├── context/         # Knowledge base for agents
+└── plugin/          # Extensions and integrations
+
+tasks/               # Task management files
+```
+
+## Core Patterns
+
+### Agent Structure Pattern
+```markdown
+---
+description: "What this agent does"
+mode: primary|subagent
+tools: [read, edit, bash, etc.]
+permissions: [security restrictions]
+---
+
+# Agent Name
+
+[Direct instructions for behavior]
+
+**EXECUTE** this [process type] for every [task type]:
+
+**1. [ACTION]** the [subject]:
+- [Specific instruction 1]
+- [Specific instruction 2]
+
+**RULES:**
+- **ALWAYS** [critical requirement]
+- **NEVER** [forbidden action]
+```
+
+### Command Structure Pattern
+```markdown
+---
+name: command-name
+agent: target-agent
+---
+
+You are [doing specific task].
+
+**Request:** $ARGUMENTS
+
+**Context Loaded:**
+@.opencode/context/core/essential-patterns.md
+@[additional context files]
+
+Execute [task] now.
+```
+
+### Context Loading Rules
+- Commands load context immediately using @ references
+- Agents can look up additional context deterministically
+- Maximum 4 context files per command (250-450 lines total)
+- Keep context files focused (50-150 lines each)
+
+## Security Guidelines
+
+- Agents have restricted permissions by default
+- Sensitive operations require explicit approval
+- No direct file system modifications without validation
+- Build commands limited to safe operations
+
+## Development Workflow
+
+1. **Planning:** Create detailed task plans for complex work
+2. **Implementation:** Execute one step at a time with validation
+3. **Review:** Code review and security checks
+4. **Testing:** Automated testing and build validation
+5. **Documentation:** Update docs and context files
+
+## Quality Gates
+
+- TypeScript compilation passes
+- Code review completed
+- Build process succeeds
+- Tests pass (if available)
+- Documentation updated