661ee20b39
Adds §1.1 (R1–R6) and §1.2 as a hard constraint on the design rather than a preference. A shared palace is valuable only for the multi-machine / multi-container pattern; for most users of the published pi-devbox and opencode-devbox images it is useless overhead. Evidence: all three sampled opencode-devbox deployments contain zero mempalace references. Requirements: solitary operation stays the default and stays byte-identical (no extra process, no outbox, no network calls); opt-in via docker-compose.yml + .env only, never an image rebuild; credentials only in .env, never in compose, the image, a command line, or a log; no new required services (the primary stays a separate standalone compose project); degrade-not-fail where mempalace is absent; fully reversible. §1.2 extends the convention pi-devbox already ships (.env.example:12-23, "local by default" with commented MEMPALACE_REMOTE_URL/_TOKEN) into a three-state ladder — local stdio (default, unchanged) / direct remote (unchanged) / edge (new, MEMPALACE_EDGE=1) — instead of inventing a new mechanism. Notes that the devbox-palace volume coupling reverses under edge mode: the local palace holds the outbox, so persisting it becomes required rather than irrelevant. Consequence recorded in §4.1: mempalace-edge must be selected at registration time, not left always-in-path to decide by env at runtime, since that would insert a process and a failure mode into every solitary user's setup. pi branches in createClient(); opencode needs its static MCP JSON templated at container start, which is new open question §9.6. Also: adds an R1 acceptance test, marks pi-devbox/.env.example:21 as stale (advertises mempalace-mcp --transport http rather than mempalace serve --token/--tls-cert), and extends the evidence index.