Reorganize brain: projects/ top level, rename filenames, update homepage

- Moved everything from ideas/passepartout/ to projects/passepartout/
- Moved legal structures to projects/flags/
- Created missing _index.org files for all subdirectories
- Stripped redundant passepartout- prefix from filenames
- Rewrote root _index.org as generalized brain index (projects + concepts)
- Updated Hugo nav to Projects/Concepts
- Updated build script section descriptions
- Deleted stale ideas/passepartout-economics.md orphan

projects/passepartout/strategy/competitors/ai-agents-scoping/continue.org

@@ -0,0 +1,22 @@
+:PROPERTIES:
+:ID:       22d0a159-68a2-4587-9375-5046beddc20c
+:CREATED:  [2026-05-22 Thu]
+:END:
+#+title: Continue — CI/Check System
+#+filetags: :passepartout:strategy:competitive:continue:
+
+TypeScript, ~328K lines, Apache 2.0. Source-controlled AI checks for CI/CD. Markdown-as-gate-policy.
+
+Architecture: Shared core (@continuedev/core) with ~80 provider implementations, tool-calling engine, config system (YAML/JSON/Markdown). Serves CLI (Ink/React TUI + headless CI mode), IDE extensions (VS Code, JetBrains), web dashboard.
+
+Safety model: Three permission levels (allow/ask/exclude). Precedence: mode policies → CLI flags → permissions.yaml → built-in defaults. Terminal security package for shell command analysis via shell-quote parsing. Workspace-scoped file access.
+
+Data model: Markdown files for checks, agents, rules. Source-controlled in-repo. YAML frontmatter for metadata.
+
+Self-modification: Checks source-controlled — any change goes through git.
+
+Verification: None (the checks are themselves unverified).
+
+Key gap vs Passepartout: The checks-as-markdown concept is philosophically similar to Passepartout's gate rules (deterministic policies checked before execution) but the implementation is dramatically simpler — regex-based policy objects, not a type-level gate stack with structural guarantees. No persistent agent, no memory, no knowledge graph, no neurosymbolic architecture. It is a gate system without an agent to gate.
+
+See the full [[id:3aa22300-2f25-57b0-8787-9f199cc978b1][competitive analysis]] for the landscape view and comparison.