feat(addons): wire the Discord add-on into packaging, catalog and docs

List the add-on in the package workflow matrix, the package checks, the host
operation policy, the catalog template and index, the case inventories of the
contract and packaging suites, and the architecture guard (two links to the
project community server are not the add-on). Document the connector in the
chats guide.

Assisted-by: Claude:claude-sonnet-5-5 go

scripts/addons/package_test.sh

@@ -89,7 +89,7 @@ test -f "$work/voice/receipt.json"
 case_ok 'package.sh builds and verifies the voice add-on for the host'
 # A platform other than the host is refused for every add-on, whatever the config.
 if [ "$host" = linux/amd64 ]; then foreign=linux/arm64; else foreign=linux/amd64; fi
-for id in tables voice face fine-tuning quantization studio talk telegram slack office sandbox web memory; do
+for id in tables voice face fine-tuning quantization studio talk telegram slack discord office sandbox web memory; do
     expect_fail "package.sh refuses a foreign platform without an executable: $id" 'is not this host' sh scripts/addons/package.sh --config "addons/$id/package/platforms.yaml" --layout "$work/foreign-$id" --version 1.2.3 --platform "$foreign" --local-check
 done
 case_ok 'package.sh refuses a foreign platform without an executable for every add-on'
@@ -123,11 +123,11 @@ mkdir -p "$work/runtime/gvisor-bin"
 for f in runsc gvisor-profile cloud-hypervisor virtiofsd gvisor-bin/checkpointgofer gvisor-bin/gvisor-sentry-prewarmer gvisor-bin/gvisor_sentry gvisor-bin/runsc-fd-parking gvisor-bin/runsc-metric-server; do
     printf 'stand-in\n' >"$work/runtime/$f"
 done
-for id in tables voice face fine-tuning quantization studio talk telegram slack office sandbox web memory; do
+for id in tables voice face fine-tuning quantization studio talk telegram slack discord office sandbox web memory; do
     PATH="$work/stubbin:$PATH" sh scripts/addons/package.sh --config "addons/$id/package/platforms.yaml" --layout "$work/stub-$id" --version 1.2.3 --platform "$host" --runtime-dir "$work/runtime" --local-check >"$work/out" 2>&1 || { cat "$work/out" >&2; exit 1; }
 done
 grep -x './addons/tables/cmd/tables CGO_ENABLED=1' "$work/gobuild.log" >/dev/null
-for id in voice face fine-tuning quantization studio talk telegram slack office sandbox web memory; do
+for id in voice face fine-tuning quantization studio talk telegram slack discord office sandbox web memory; do
     grep -x "./addons/$id/cmd/$id CGO_ENABLED=0" "$work/gobuild.log" >/dev/null || { echo "FAIL: $id is not built with CGO_ENABLED=0" >&2; cat "$work/gobuild.log" >&2; exit 1; }
 done
 case_ok 'package.sh builds Tables with cgo and the pure Go add-ons without'

scripts/addons/suites.json

@@ -482,6 +482,7 @@
           "audits actual host calls and strict package contract for quantization",
           "audits actual host calls and strict package contract for sandbox",
           "audits actual host calls and strict package contract for slack",
+          "audits actual host calls and strict package contract for discord",
           "audits actual host calls and strict package contract for studio",
           "audits actual host calls and strict package contract for tables",
           "audits actual host calls and strict package contract for talk",
@@ -553,6 +554,7 @@
           "has consistent package files for quantization",
           "has consistent package files for sandbox",
           "has consistent package files for slack",
+          "has consistent package files for discord",
           "has consistent package files for studio",
           "has consistent package files for tables",
           "has consistent package files for talk",
@@ -4465,6 +4467,7 @@
       "package.sh refuses a foreign platform without an executable: talk",
       "package.sh refuses a foreign platform without an executable: telegram",
       "package.sh refuses a foreign platform without an executable: slack",
+      "package.sh refuses a foreign platform without an executable: discord",
       "package.sh refuses a foreign platform without an executable for every add-on",
       "package.sh builds Tables with cgo and the pure Go add-ons without",
       "matrix fails closed while no platform is enabled",
@@ -4516,6 +4519,7 @@
       "go: has consistent package files for quantization",
       "go: has consistent package files for sandbox",
       "go: has consistent package files for slack",
+      "go: has consistent package files for discord",
       "go: has consistent package files for studio",
       "go: has consistent package files for tables",
       "go: has consistent package files for talk",
@@ -4570,6 +4574,7 @@
       "go: audits actual host calls and strict package contract for quantization",
       "go: audits actual host calls and strict package contract for sandbox",
       "go: audits actual host calls and strict package contract for slack",
+      "go: audits actual host calls and strict package contract for discord",
       "go: audits actual host calls and strict package contract for studio",
       "go: audits actual host calls and strict package contract for tables",
       "go: audits actual host calls and strict package contract for talk",