docs: record POC placement conventions in OQ-TN-10

Worktree/branch for repo-dependent POCs; standalone crate in the
global workspace for self-contained POCs (alknet-channels-poc
precedent); findings always land in docs/research/.

docs/research/phase-0-findings.md

@@ -607,8 +607,14 @@ Phase 0 may need (in rough priority order, per the SDD process's
    agnostic" beyond IP substrates.
 4. **Two-pump helper extraction spike** — OQ-TN-06, only after 1–3.
 
-POCs live in `.worktrees/research/<task-id>/` per the SDD process, or as
-standalone crates (`/workspace/alknet-channels-poc` precedent).
+POC placement conventions (2026-09-05): a POC that needs code from
+this repo runs in a worktree/branch (`.worktrees/research/<task-id>/`
+per the SDD process); a POC that is self-contained runs as a
+standalone crate in the global workspace (the
+`/workspace/alknet-channels-poc` precedent) with its findings written
+into `docs/research/` here. Both are valid; pick per the POC's
+dependency footprint. Findings always land in `docs/research/`
+regardless of where the code lives.
 
 **Status:** open — pick 1 (and probably 2) after the research pass;
 3 is cheap enough to fold into whichever POC runs first.
@@ -645,9 +651,9 @@ Candidate reading for the research specialist (to be expanded):
 
 ## Convergence checklist (what Phase 0 must produce)
 
-- [ ] Survey notes: SSH/SOCKS5/tun2proxy addressing + UDP framing
+- [ ] Survey notes: SSH/SOCKS5 addressing + UDP framing
       (OQ-TN-01, OQ-TN-02) — tun2proxy UDP gateway done (§Prior art);
-      SSH/SOCKS5 addressing survey still open
+      SSH/SOCKS5 survey delegated to research specialist
 - [x] Reframe landed (OQ-TN-01) — params = self-contained JSON open-op
       object identifying a produced resource + substrate
       discriminator (`tcp`/`udp`/extensible); producer owns the