feat: add GPT-5.5 model support

[Hansen1018]

Summary

• Problem: OpenAI model offerings need to include GPT-5.5 as a new tier
• What changed: Added GPT-5.5 model to CLAW402_MODELS, store/ai_charge.go, and mcp/payment/claw402.go with pricing at $0.15/call
• What did NOT change (scope boundary): All other AI models and providers remain unchanged. DeepSeek-V4 models (deepseek-v4-flash, deepseek-v4-pro) are also included from merged dev branch.

Change Type

• Feature

Scope

• Trading engine / strategies
• MCP / AI clients
• API / server
• Telegram bot / agent
• Web UI / frontend
• Config / deployment
• CI/CD / infra

Linked Issues

• Closes #
• Related #

Testing

What you verified and how:

• go build ./... passes
• npm run build passes (web)
• go test ./... passes
• Manual testing done (describe below)

Security Impact

• Secrets/keys handling changed? (No)
• New/changed API endpoints? (No)
• User input validation affected? (No)

Compatibility

• Backward compatible? (Yes)
• Config/env changes? (No)
• Migration needed? (No)

[github-actions]

🤖 Advisory Check Results

These are advisory checks to help improve code quality. They won't block your PR from being merged.

📋 PR Information

Title Format: ✅ Good - Follows Conventional Commits
PR Size: 🟢 Small (14 lines: +11 -3)

🔧 Backend Checks

Go Formatting: ⚠️ Needs formatting

Files needing formatting

agent/brain.go
agent/execution_state.go
agent/onboard.go
agent/planner_runtime.go
agent/scheduler.go
agent/sentinel.go
agent/skill_dag.go
agent/skill_dag_runtime.go
agent/stock.go
agent/tools_test.go

Go Vet: ✅ Good
Tests: ✅ Passed

Fix locally:

go fmt ./...      # Format code
go vet ./...      # Check for issues
go test ./...     # Run tests

⚛️ Frontend Checks

Build & Type Check: ✅ Success

Fix locally:

cd web
npm run build  # Test build (includes type checking)

---

📖 Resources

• Contributing Guidelines
• Migration Guide

Questions? Feel free to ask in the comments! 🙏

---

These checks are advisory and won't block your PR from being merged. This comment is automatically generated from pr-checks-run.yml.

[github-actions]

🤖 Advisory Check Results

These are advisory checks to help improve code quality. They won't block your PR from being merged.

📋 PR Information

Title Format: ✅ Good - Follows Conventional Commits
PR Size: 🔴 Large (1059 lines: +257 -802)

💡 Suggestion: This is a large PR. Consider breaking it into smaller, focused PRs for easier review.

🔧 Backend Checks

Go Formatting: ⚠️ Needs formatting

Files needing formatting

agent/brain.go
agent/execution_state.go
agent/onboard.go
agent/planner_runtime.go
agent/scheduler.go
agent/sentinel.go
agent/skill_dag.go
agent/skill_dag_runtime.go
agent/stock.go
agent/tools_test.go

Go Vet: ✅ Good
Tests: ✅ Passed

Fix locally:

go fmt ./...      # Format code
go vet ./...      # Check for issues
go test ./...     # Run tests

⚛️ Frontend Checks

Build & Type Check: ✅ Success

Fix locally:

cd web
npm run build  # Test build (includes type checking)

---

📖 Resources

• Contributing Guidelines
• Migration Guide

Questions? Feel free to ask in the comments! 🙏

---

These checks are advisory and won't block your PR from being merged. This comment is automatically generated from pr-checks-run.yml.

[cla-assistant]

All committers have signed the CLA.

[cla-assistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
2 out of 3 committers have signed the CLA.

✅ deanokk
✅ Hansen1018
❌ shinchan-zhai
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[github-actions]

🤖 Advisory Check Results

These are advisory checks to help improve code quality. They won't block your PR from being merged.

📋 PR Information

Title Format: ✅ Good - Follows Conventional Commits
PR Size: 🟢 Small (16 lines: +12 -4)

🔧 Backend Checks

Go Formatting: ⚠️ Needs formatting

Files needing formatting

agent/execution_state.go
agent/model_provider_catalog.go
agent/skill_dag_runtime.go
agent/stock.go
api/errors.go
api/handler_wallet.go
cmd/e2e_builder_fee/main.go
kernel/formatter.go
kernel/grid_engine.go
kernel/validate_test.go

Go Vet: ✅ Good
Tests: ✅ Passed

Fix locally:

go fmt ./...      # Format code
go vet ./...      # Check for issues
go test ./...     # Run tests

⚛️ Frontend Checks

Build & Type Check: ✅ Success

Fix locally:

cd web
npm run build  # Test build (includes type checking)

---

📖 Resources

• Contributing Guidelines
• Migration Guide

Questions? Feel free to ask in the comments! 🙏

---

These checks are advisory and won't block your PR from being merged. This comment is automatically generated from pr-checks-run.yml.