docs: add API Key Management section to vscode-extension.md

Co-Authored-By: Oz <oz-agent@warp.dev>

Author: tbitcs

.specsmith/chat/chat-2026-04-09T13-18-42.jsonl

@@ -1,2 +1,7 @@
 {"role":"error","text":"[Apr 9, 09:18:43 AM] Agent process ended (exit code 1) — send a message to restart","ts":"2026-04-09T13:18:43.464Z"}
 {"role":"error","text":"specsmith not responding (tried: \"C:\\Users\\trist\\.specsmith\\venv\\Scripts\\specsmith.exe\")\nTo fix:\n  • Ctrl+Shift+P → specsmith: Install or Upgrade\n  • Or set specsmith.executablePath in VS Code settings\n  • On Windows / pip install path:\n    %LOCALAPPDATA%\\Python\\pythoncore-3.12-64\\Scripts\\specsmith.exe","ts":"2026-04-09T13:19:02.885Z"}
+{"role":"agent","text":"To start the session, I'll run through the initial checklist which includes syncing the latest changes from the remote repository and running governance health checks to ensure everything is up-to-date and compliant with the project's specifications.\n\nFirst, let's pull any recent updates:\n","ts":"2026-04-09T13:20:42.392Z"}
+{"role":"tool","text":"✗ Not on any branch","name":"sync","ts":"2026-04-09T13:20:42.876Z"}
+{"role":"tool","text":"[exit 1]\nAuditing C:\\Users\\trist\\Development\\BitConcepts\\specsmith\n\n  ✓ Required file AGENTS.md exists\n  ✓ Required file LEDGER.md exists\n  ✓ Governance file docs/governance/RULES.md exists\n  ✓ Governance file docs/governance/ROLES.md exists\n  ✓ Governance file docs/governance/CONTEXT-BUDGET.md exists\n  ✓ Governance file docs/governance/VERIFICATION.md exists\n  ✓ Governance file docs/governance/DRIFT-METRICS.md exists\n  ✓ Recommended file docs/REQUIREMENTS.md exists\n  ✓ Recommended file docs/TEST_SPEC.md exists\n  ✓ Recommended file docs/ARCHITECTURE.md exists\n  ✓ Recommended file CONTRIBUTING.md exists\n  ✓ Recommended file LICENSE exists\n  ✗ 3 REQ(s) without test coverage: REQ-OPT-011, REQ-OPT-012, REQ-OPT-013\n  ✓ LEDGER.md has 205 lines (within threshold)\n  ✓ 13 open, 4 closed TODOs\n  ✓ AGENTS.md: 76 lines\n  ✓ docs/governance/RULES.md: 76 lines\n  ✓ docs/governance/ROLES.md: 30 lines\n  ✓ docs/governance/CONTEXT-BUDGET.md: 62 lines\n  ✓ docs/governance/VERIFICATION.md: 43 lines\n  ✓ docs/governance/DRIFT-METRICS.md: 54 lines\n  ✓ CI config references expected verification tools for cli-python\n  ✓ Project type cli-python matches detected structure\n\n1 issue(s) found (0 fixable). 22 checks passed.\nNo auto-fixable issues found.","name":"audit","ts":"2026-04-09T13:20:43.477Z"}
+{"role":"tool","text":"✗ Not on any branch","name":"sync","ts":"2026-04-09T13:20:44.065Z"}
+{"role":"agent","text":"It seems you're not currently on any branch. Would you like to create a new branch following the project's branching strategy? If so, please provide a name for the branch.\n\nIf you need help with other tasks or would like to perform a different action, let me know!","ts":"2026-04-09T13:20:48.397Z"}