[Mathih13]

A Gateway adapter had to satisfy about 290 methods, because WorldStore carried 185 methods of its own and 15 family traits as supertraits. 85 methods had default bodies, and 78 of those never ran. Every family change edited one 4,800-line shared Fake in world/tests.rs, and every test that entered the world counted a fixed 13 packets.

This is phase 3 of #635. It changes no behaviour.

Store

• WorldStore has no methods now. It is an umbrella over one Store trait per Protocol Family (session, shard routing, character, transfer, party, mail, social, npc, trainer, bank, combat, death, trade, loot roll, speech, and the existing action families), with a blanket impl.
• No Store trait has a default body. A method an adapter does not implement fails to compile.
• The Coordinator implements each family in gateway/src/stdb/store/<family>.rs. The bodies are moved verbatim; phase 4 collapses them.
• Handlers and helpers bound on the families they call, chosen by the compiler.
• The World Session holds one RoutedStore instead of home plus on_home_shard!. A None routing answer keeps the current pin, and leaving the world clears it, as before.
• Deleted dead production code that only the removed defaults reached: home_shard, publish_shard_index, realm_core::settle_shard_index, realm_core::publish_shard_index, config::resolve_home_shard and HomeShard, with the 11 tests that only covered them. locate_home_shard keeps its own tests of the same rules.

Tests

• The shared Fake moved to gateway/src/world/test_support/ as WorldFake, with one state struct per family in world_fake/<family>.rs. It keeps the multi-shard topology that party, transfer, mail, presence, who, whisper, loot rolls and shard routing need.
• drain_world_entry reads up to the SMSG_WEATHER that closes the world-entry batch. The fixed packet counts are gone.
• world/tests.rs is split into one test file per family plus session_tests.rs.
• Trainer, bank, combat, trade, death, loot window, vendor, auction, item, taxi, melee, cast, guild, chat, channel and weather tests now run their handler against a family-sized Fake. Tests that asserted a Fake's call log now assert the outcome. Session-level tests (handshake, world entry, routing, logout order, flood limit) stay on the socket.
• Quest, npc, speech and character select still run on WorldFake, because their handlers are bound on many families. Phase 5 narrows them.
• Gateway unit tests: 1904 before the conversion, 1891 after. Each removed test duplicated a dispatcher test, and the conversion agents named the covering test for each.

Glossary: adds Protocol Family and Speech.

Local gates: fmt, clippy with -D warnings, the five crate test commands and the wasm check pass.

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[Mathih13]

Review of efff177: Standards and Spec

This review has two axes. The Standards axis checks the code against CODING_STANDARDS.md, AGENTS.md, CONTEXT.md and a baseline of code smells. The Spec axis checks it against Phase 3 of #635. The two axes are not ranked against each other.

Priority: P1 fix before merge · P2 should fix, or state it as a known gap · P3 optional.

Standards

Correctness. I found no production regression. RoutedStore keeps the old on_home_shard! behaviour: a None from settle_home_shard keeps the pin, leave_world unpins after the claim release, and dispatch reads the handle once per frame. The deleted home_shard, settle_shard_index and resolve_home_shard were dead code. No Store trait still has a default body.

Documented standards (hard)

• P2: the Protocol Family definition contradicts the code. CONTEXT.md:1232 says "a handler takes only its family's Store". But handle_char is bound on four Stores (handlers/char.rs:328), handle_loot on five, and enter_world and dispatch take &dyn WorldStore. CODING_STANDARDS.md treats stale explanation as a defect. Change the definition to describe the current state, or narrow the bounds.
• P2: glossary drift on "family". The new entry lists _Avoid_: family (unqualified), but new prose says "Store family", "family Fake" and "every family": world/store.rs:1-3,14-15, stdb/store/mod.rs:1, test_support/family.rs, world_fake/mod.rs:1,59-62 and docs/recipes/add-an-opcode.md step 8. The definition itself says "the vendor family". Use "Protocol Family" consistently, or relax the Avoid line.
• P3: an issue number in a comment you rewrote. world_fake/mod.rs:65 reads /// 195: npc_refuses_interaction …. CODING_STANDARDS.md says "Do not put issue numbers in code comments", and the boy scout rule applies.

Baseline smells (judgement calls)

• P2: Duplicated Code and Shotgun Surgery. world/store.rs:16-48 and :52-85 list the same 30 bounds twice, once for the trait and once for the blanket impl. The add-an-opcode recipe now has a contributor edit both lists.
• P2: Refused Bequest. world/handle_loot_fake.rs has 27 unreachable! stubs. The npc_store_refusing_by! macro (family.rs:61-140) has 13 unimplemented! stubs. Both show that NpcStore and the handle_loot bounds are wider than their callers need.
• P3: Fakes live in three places. They are in test_support/world_fake, in world/handle_loot_fake.rs (loaded through #[path] from death_tests.rs:6), and in handlers/*::tests, re-exported under #[cfg(test)] (handlers/mod.rs).
• P3: Mysterious Name. WorldFake.trade_error (world_fake/mod.rs:69) is read only by the npc, party, quest and social Fakes, never by trade. RoutedStore.default (world/mod.rs:434) holds the listener's handle.
• P3: two ways to reach the Store. handle_char receives a family Store, but the login and world-port paths read conn.store.current() (char.rs:424-425, 487-489).
• P3: stale panic text. In world_fake/mod.rs:96-98, the lk panic says "see the fn doc on lk", but lk has no doc comment.

Spec (#635 Phase 3)

(a) Missing or partial

• P1: the PR description overstates what this PR delivers. Phase 3 says "The shared InMemoryStore shrinks to the multi-shard topology the transfer and party families need" and "Each family trait has its own small Fake next to its tests". WorldFake (world_fake/mod.rs:57-92) still carries state for about 21 families across 29 impl files. Mail, party, transfer, session, guild, member stats, presence, social, character, npc, death, vendor and auction tests still use it. Mail is one of the families the spec names. Either do the shrink, or list it as an open item for phase 5 in the PR and in Contributor readiness: retire text-pinning tests, cut onboarding, split the Store seam #635. Right now only quest, npc, speech and character select are named as deferred.
• P2: the phase proof does not hold yet. The spec says "Phase 3 proves: each family's tests compile against only that family's Fake." That is not true while most families still use the shared WorldFake.
• P2: WorldStore still lists the family traits as supertraits. The spec says "Remove the fifteen family traits from the WorldStore supertrait list." store.rs:16-46 keeps 30 supertraits as a method-less umbrella. Handlers do bind on families, which meets the intent, but ShardRoutingStore returns Arc<dyn WorldStore> (store.rs:128-148). That brings the umbrella back into party (party.rs at about 20 sites), mail.rs:777, loot.rs:131,183, party_mirror.rs:94-95, enter_world and dispatch.
• P2: tests still assert on call-log order. The spec says a good test "never pins a call sequence, and never asserts on a Fake's recording format". These still do: guild_tests.rs:30 (position(&calls, "guild_op:SignOff")), tests.rs:204 position(), and TopologyState.calls as read in party_tests.rs and transfer_tests.rs.

(b) Not asked for

• P3: the dead-code deletion in gateway/src/config.rs and gateway/src/realm_core.rs (11 tests) goes past the spec, but I confirmed the code was dead. The module/ changes touch comments only, so there is no schema or reducer change.
• P2: about 23 socket tests were deleted as duplicates in 0d44b6e and 83a56e6, for example messagechat_* and a_weather_read_failure_still_completes_world_entry. The spec asks for a split by family, not a smaller suite. Most of them have handler-level equivalents. Please check that a_weather_read_failure_still_completes_world_entry has one, because it covers session behaviour. Also, #[test] in gateway/src counts 1922 → 1898 (−24), but the PR says 1904 → 1891 (−13). Please reconcile the two numbers.

(c) Implemented, but check

• P3: drain_world_entry (test_support/entry.rs:15-30) stops at SMSG_WEATHER. Weather closes the batch today, so this works. But it is not a dedicated end marker: a frame that arrives after weather goes unread. A comment that names this assumption would help the next person who changes login order.

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Summary. Standards: 9 findings. The worst is the Protocol Family definition, which says handlers take only their own family's Store when several do not. Spec: 8 findings. The worst is that WorldFake was not narrowed to the multi-shard families, and that gap is not stated as deferred.

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