Feat/gemini cli agent

[peyton-alt]

Features:

• Hooks installed and verified (11 types defined)
• Session tracking with checkpoints
• Concurrent session blocking
• Description extraction from Gemini JSON transcripts

New Files

File	Description
cmd/entire/cli/agent/geminicli/gemini.go	Gemini agent implementation
cmd/entire/cli/agent/geminicli/hooks.go	Hook installation and configuration
cmd/entire/cli/agent/geminicli/transcript.go	JSON transcript parsing
cmd/entire/cli/agent/geminicli/types.go	Type definitions
cmd/entire/cli/agent/geminicli/*_test.go	Unit tests
cmd/entire/cli/hooks_geminicli_handlers.go	Hook handlers (821 lines)
cmd/entire/cli/integration_test/gemini_concurrent_session_test.go	Integration tests
.gemini/	Gemini CLI configuration, commands, and agents
GEMINI.md	Project documentation for Gemini

Modified Files

File	Change
cmd/entire/cli/hook_registry.go	Register Gemini handlers
cmd/entire/cli/hooks_cmd.go	Import geminicli package
cmd/entire/cli/setup.go	Add Gemini to enable flow
cmd/entire/cli/agent/types.go	Add UserPrompt field
cmd/entire/cli/agent/registry.go	Add GetByAgentType() for cross-agent lookup
cmd/entire/cli/session/state.go	Add AgentType field
cmd/entire/cli/strategy/manual_commit_condensation.go	Gemini JSON transcript parsing
cmd/entire/cli/strategy/manual_commit_logs.go	Fix path for session metadata
cmd/entire/cli/hooks_claudecode_handlers.go	Cross-agent resume command

Integration tests cover:

1. TestGeminiConcurrentSessionWarning_BlocksFirstPrompt - Verifies blocking response format
2. TestGeminiConcurrentSessionWarning_SetsWarningFlag - Verifies state persistence
3. TestGeminiConcurrentSessionWarning_SubsequentPromptsSucceed - Verifies one-time warning
4. TestGeminiConcurrentSessionWarning_NoWarningWithoutCheckpoints - Verifies no false positives
5. TestGeminiConcurrentSessionWarning_ResumeCommandFormat - Verifies Gemini-specific resume command

Claude Code vs Gemini CLI Hook

Aspect	Claude Code	Gemini CLI
Config file	.claude/settings.json	.gemini/settings.json
Hook format	hooks: [{matcher, hooks: [{command}]}]	hooks: {EventName: [{matcher?, hooks: [{name, type, command}]}]}
Blocking response	{"continue":false,"stopReason":"..."}	{"decision":"block","reason":"..."}
Blocking exit code	Non-zero	0 (must be 0 for JSON parsing)
Transcript format	JSONL (one JSON object per line)	JSON (single object with messages array)
Resume command	claude -r <session-id>	gemini --resume <session-id>

How to Test

# Enable Gemini
entire enable --agent gemini --strategy manual-commit --force

# Start Gemini session
gemini
# Create a file, then /exit

# Verify session tracked
entire session list
# Expected: Shows session with description extracted from transcript

# Test concurrent blocking
gemini
# Expected: Shows blocking message with "gemini --resume <session-id>"

[Copilot]

Pull request overview

This PR adds comprehensive Gemini CLI agent support to the Entire CLI tool, implementing the full agent interface with hook support for tracking Gemini CLI sessions. The implementation mirrors the existing Claude Code agent pattern while adapting to Gemini's specific hook format and JSON transcript structure.

Changes:

• New Gemini CLI agent implementation with full hook support
• Integration tests for concurrent session handling and agent operations
• Hook handlers for session lifecycle, tool usage, and model interactions
• Support for Gemini-specific transcript parsing (JSON vs Claude's JSONL)

Reviewed changes

Copilot reviewed 33 out of 33 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
cmd/entire/cli/agent/geminicli/gemini.go	Core agent implementation with session ID transformation and transcript parsing
cmd/entire/cli/agent/geminicli/hooks.go	Hook installation/uninstallation logic for .gemini/settings.json
cmd/entire/cli/agent/geminicli/transcript.go	Gemini JSON transcript parser for extracting prompts and modified files
cmd/entire/cli/agent/geminicli/types.go	Type definitions for Gemini settings, hooks, and input structures
cmd/entire/cli/hooks_geminicli_handlers.go	11 hook handler implementations for Gemini lifecycle events
cmd/entire/cli/setup.go	Adds setupGeminiCLIHook() to enable flow
cmd/entire/cli/integration_test/gemini_concurrent_session_test.go	5 integration tests for concurrent session warning behavior
cmd/entire/cli/integration_test/hooks.go	Test helpers for Gemini hook simulation
cmd/entire/cli/integration_test/testenv.go	Added GeminiProjectDir to test environment
cmd/entire/cli/integration_test/agent_test.go	Unit tests for agent detection, hook installation, and session operations
.gemini/settings.json	Gemini CLI hook configuration for the repository
test-gemini.txt	Test artifact file
.entire/settings.json	Modified local configuration
.claude/settings.json	Modified local Claude configuration

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.