CORE stage 8 merged, so vdm::Engine is linkable. This closes D4a and
narrows D4b: `velox add <url>` now actually downloads.
- sched/engine_port_core.hpp — the real EnginePort: forwards to a live
vdm::Engine, keeps the DownloadHandle per task for pause/resume/
cancel/provide_auth/decide/refresh_url, drives set_task_order /
set_max_active_segments / set_host_segment_cap via
engine.segment_budget(). CORE confirmed the admission model: DAEMON
decides when to start(); the engine's own download_task calls
register_task/set_want internally — DAEMON never touches per-task
budget calls. EnginePort gains release(TaskId) so the port drops a
handle when the task goes terminal.
- rpc/event_loop — EventLoop::post(fn): thread-safe, runs fn on the
loop thread next iteration. The marshaller for engine-thread
callbacks.
- main.cpp — constructs vdm::Engine + EnginePortCore + Scheduler
(post_to_loop = loop.post). At startup: reconcile_after_restart()
(ADR 0013 §5), reload_config(), tick(). A 1 s timerfd on the loop
re-runs tick() (schedule windows, missed nudges); download.add nudges
via dispatcher.set_on_mutation.
End-to-end verified against tools/testserver: `velox add
http://127.0.0.1:.../file/512K` -> task queued -> scheduler admits ->
engine downloads 524288 bytes -> complete, file on disk. First
byte-path all the way through the project.
safepath-adversarial.md: re-verified per its own note — CORE landed
O_NOFOLLOW on the target open (core/src/io/sparse_file.cpp), so the
leaf-symlink TOCTOU is now closed; residual is down to one
intermediate-dir gap (documented post-M1 chase).
36 daemon/cli tests green; scheduler + uds_roundtrip TSan-clean.
Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Upd9WhG9oppieig5nRDLig
samiandClaude Sonnet 5
08d7ee9263