feat(tools): scaffold ruview MCP server + CLI + ADR-104 (#705)

Adds two new npm packages that expose RuView's WiFi-DensePose
sensing capabilities outside the Cognitum appliance ecosystem:

- tools/ruview-mcp/ (@ruv/ruview-mcp) — MCP server with 6 tools:
  ruview_csi_latest, ruview_pose_infer, ruview_count_infer,
  ruview_registry_list, ruview_train_count, ruview_job_status.
  Uses @modelcontextprotocol/sdk with stdio transport.
  6/6 smoke tests pass. TypeScript strict mode, Node 20.

- tools/ruview-cli/ (@ruv/ruview-cli) — Yargs CLI with matching
  subcommands: csi tail, pose infer, count infer, cogs list,
  train count, job status. Same fail-open pattern as the cog
  binaries (WARN to stderr, exit 0 on unavailable sensing-server).

- docs/adr/ADR-104-ruview-mcp-cli-distribution.md — design rationale,
  6-row threat table, packaging plan, acceptance gates, failure modes.

- docs/research/sota-2026-05-22/HORIZON.md — 12-hour horizon plan
  with 7 milestones tracked (M1 complete in this commit).

Both packages are private:true pending the user's publish decision.
Inference is via subprocess to the signed cog binaries (ADR-100/101/103)
— no JS/WASM ML engine bundled.

tools/ruview-cli/src/cog.ts

@@ -0,0 +1,44 @@
+/**
+ * Subprocess wrapper for Cognitum Cog binaries (CLI variant).
+ * Mirrors tools/ruview-mcp/src/cog.ts.
+ */
+
+import { spawn } from "node:child_process";
+
+export type Result<T> = { ok: true; data: T } | { ok: false; error: string };
+
+const COG_TIMEOUT_MS = 15_000;
+
+export async function runCog(binary: string, args: string[]): Promise<Result<string>> {
+  return new Promise((resolve) => {
+    let stdout = "";
+    let stderr = "";
+
+    const child = spawn(binary, args, {
+      timeout: COG_TIMEOUT_MS,
+      stdio: ["ignore", "pipe", "pipe"],
+    });
+
+    child.stdout?.on("data", (chunk: Buffer) => { stdout += chunk.toString(); });
+    child.stderr?.on("data", (chunk: Buffer) => { stderr += chunk.toString(); });
+
+    child.on("error", (e) => {
+      resolve(err(
+        `Failed to launch "${binary}" (${args.join(" ")}): ${e.message}. ` +
+        `Set RUVIEW_POSE_COG_BINARY / RUVIEW_COUNT_COG_BINARY or install the cog.`
+      ));
+    });
+
+    child.on("close", (code) => {
+      if (code !== 0) {
+        resolve(err(`Cog "${binary} ${args.join(" ")}" exited with code ${code}. stderr: ${stderr.trim() || "(empty)"}`));
+      } else {
+        resolve({ ok: true, data: stdout });
+      }
+    });
+  });
+}
+
+function err(error: string): { ok: false; error: string } {
+  return { ok: false, error };
+}