Decompose architecture into 35 atomic tasks across 10 generations for implementation

tasks/meta/client-layer.md

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+---
+id: meta/client-layer
+name: Complete client layer — SOCKS5, port forwarding, channel manager, ConnectOptions
+status: pending
+depends_on:
+  - client/socks5-server
+  - client/port-forwarding
+  - client/channel-manager
+  - client/connect-options
+scope: system
+risk: high
+impact: phase
+level: planning
+---
+
+## Description
+
+Meta task that clusters all client module tasks. Once complete, the client establishes SSH sessions via any transport, runs a local SOCKS5 proxy, manages port forwards, handles reconnection with exponential backoff, and shuts down gracefully.
+
+## Acceptance Criteria
+
+- [ ] All client tasks completed
+- [ ] SOCKS5 proxy works with DNS leak prevention (SOCKS5h)
+- [ ] Local and remote port forwarding work
+- [ ] Channel manager handles reconnection with exponential backoff (1s → 30s cap)
+- [ ] Port forwards re-registered after reconnection
+- [ ] ConnectOptions programmatic struct and CLI flags available
+- [ ] Graceful shutdown on SIGTERM/SIGINT
+
+## References
+
+- docs/architecture/client.md
+
+## Notes
+
+> To be filled by implementation agent
+
+## Summary
+
+> To be filled on completion