docs(cliproxy): document api profile bridge flow

- explain the new CLIProxy to API Profiles bridge in README

- record issue #649 in roadmap and PDR updates

Refs #649

docs/project-roadmap.md

@@ -1,6 +1,6 @@
 # CCS Project Roadmap
 
-Last Updated: 2026-03-18
+Last Updated: 2026-03-19
 
 Forward-looking roadmap documenting current priorities, GitHub issues, and future feature plans.
 
@@ -41,6 +41,7 @@ All major modularization work is complete. The codebase evolved from monolithic
 
 ### Recent Fixes
 
+- **2026-03-19**: **#649** CLIProxy and API Profiles now share a guided bridge flow. Users can configure a provider in CLIProxy or the embedded control panel, jump into `API Profiles`, and create a routed profile without manually typing `/api/provider/{provider}` URLs, proxy auth tokens, or default model wiring. Bridge profiles are labeled in the API list/editor and resolve against the current local or remote CLIProxy target.
 - **2026-03-18**: **#755** Marketplace refresh no longer reuses one shared `known_marketplaces.json` across isolated instances. CCS now keeps marketplace payload directories shared while reconciling per-instance marketplace metadata so Claude Code validation succeeds for alternating or concurrent profiles, including Windows copy fallback.
 - **2026-03-17**: Deprecated user-facing GLMT discovery across CLI help, completions, presets, and docs. Existing `glmt` profiles now run through a compatibility path that normalizes legacy proxy settings to the direct GLM endpoint.
 - **#748**: API profile creation now keeps provider selection compact by collapsing advanced presets behind an explicit toggle, shrinking chooser cards so the form fields stay visually primary, and giving `llama.cpp` a dedicated provider logo.
@@ -240,6 +241,6 @@ The check mode supports a maintainability regression gate that blocks increases
 
 - [Codebase Summary](./codebase-summary.md) - Current structure
 - [Code Standards](./code-standards.md) - Patterns and conventions
-- [System Architecture](./system-architecture.md) - Architecture diagrams
+- [System Architecture](./system-architecture/index.md) - Architecture diagrams
 - [Hardening Debt Burndown Tracker](./hardening-debt-burndown.md) - Legacy shim + sync-fs debt tracking
 - [CLAUDE.md](../CLAUDE.md) - AI development guidance