chore(docs): add glossary and cross-link canonical terms

[yordis]

Contributors and readers were inferring shared terms (decider, ACP, WIT, tenancy, and the rest) from scattered ADRs, so the same vocabulary drifted in meaning across documents. A single glossary gives each term one authoritative definition anchored to the ADR or architecture doc that owns it, and cross-linking the docs lets any reader jump to that definition at the first mention.

[cursor]

PR Summary

Low Risk
Documentation and VitePress config only; no runtime or security behavior changes.

Overview
Adds a Glossary section to the docs site: many term pages under docs/glossary/ (grouped by concern), an index, and VitePress nav/sidebar wired through new helpers that read frontmatter (term, section, order) and build collapsed section groups with a fixed section order.

Cross-links from existing ADRs and architecture pages (../glossary/...) so first mentions of shared vocabulary (protocol, transport, decider, NATS, agent model types, etc.) point at one definition anchored to the owning ADR or architecture doc.

Glossary build fails fast on bad frontmatter or unknown section names via zod validation and GLOSSARY_SECTION_ORDER.

^{Reviewed by Cursor Bugbot for commit 7592728. Bugbot is set up for automated code reviews on this repo. Configure here.}

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📥 Commits

Reviewing files that changed from the base of the PR and between c409b45 and 7592728.

📒 Files selected for processing (96)

• docs/.vitepress/config.mts
• docs/.vitepress/helpers.ts
• docs/adr/0001-workspace-runtime-taxonomy.md
• docs/adr/0002-rust-crate-boundaries.md
• docs/adr/0003-ai-protocol-transport-taxonomy.md
• docs/adr/0004-protocol-and-transport-layering.md
• docs/adr/0005-polyglot-workspace-layout.md
• docs/adr/0006-helpers-naming.md
• docs/adr/0008-opentelemetry-observability.md
• docs/adr/0009-protocol-buffers-wire-contracts.md
• docs/adr/0010-testcontainers-for-infrastructure-tests.md
• docs/adr/0011-jsonrpc-over-nats-binding.md
• docs/adr/0012-ard-compatible-discovery-catalog.md
• docs/adr/0013-origin-stream-sequence-header.md
• docs/adr/0014-command-and-query-naming.md
• docs/adr/0015-rust-tls-library.md
• docs/adr/0016-protobuf-rpc-over-nats-micro-binding.md
• docs/adr/0017-aauth-agent-authentication.md
• docs/adr/0018-connectrpc-gateway-for-browser-product-surfaces.md
• docs/adr/0019-console-webapp-stack.md
• docs/adr/0020-acp-sdk-1x-boundary-and-bridge-traits.md
• docs/adr/0021-typed-decode-over-passthrough-forwarding.md
• docs/adr/0022-canonical-acp-wire-methods-on-nats.md
• docs/adr/0023-secret-management-and-key-custody-direction.md
• docs/adr/0024-agent-platform-stream-topology.md
• docs/adr/0025-agent-definition-data-ownership.md
• docs/adr/0026-command-authorization-principal.md
• docs/adr/0027-decider-multi-tenancy-primitive.md
• docs/adr/0028-decider-admission-control-and-backpressure.md
• docs/adr/0029-decider-retention-and-truncation-watermark.md
• docs/adr/0030-customer-controlled-key-backend-routing.md
• docs/adr/0031-agent-implementation-and-session-plan.md
• docs/adr/0032-model-route-and-credential-binding.md
• docs/architecture/acp-conformance.md
• docs/architecture/event-metadata.md
• docs/glossary/a2a.md
• docs/glossary/aauth.md
• docs/glossary/acp.md
• docs/glossary/admission-control.md
• docs/glossary/adr.md
• docs/glossary/agent.md
• docs/glossary/agentconfiguration.md
• docs/glossary/agentimplementation.md
• docs/glossary/agentrevision.md
• docs/glossary/ard.md
• docs/glossary/bridge.md
• docs/glossary/checkpoint.md
• docs/glossary/command.md
• docs/glossary/component.md
• docs/glossary/connectrpc.md
• docs/glossary/crate.md
• docs/glossary/credentialbinding.md
• docs/glossary/decide-evolve-initial-state.md
• docs/glossary/decider.md
• docs/glossary/decision.md
• docs/glossary/epoch.md
• docs/glossary/event-envelope.md
• docs/glossary/event-sourcing.md
• docs/glossary/event.md
• docs/glossary/executionattempt.md
• docs/glossary/external-delegated-agent.md
• docs/glossary/fuel.md
• docs/glossary/headers.md
• docs/glossary/index.md
• docs/glossary/jetstream.md
• docs/glossary/json-rpc.md
• docs/glossary/kv-bucket.md
• docs/glossary/mcp.md
• docs/glossary/model-access-service.md
• docs/glossary/modelaccessgrant.md
• docs/glossary/modelproviderconnection.md
• docs/glossary/modelselection.md
• docs/glossary/nats-micro.md
• docs/glossary/nats.md
• docs/glossary/openbao.md
• docs/glossary/opentelemetry.md
• docs/glossary/pop.md
• docs/glossary/processor.md
• docs/glossary/projection.md
• docs/glossary/protocol-buffers.md
• docs/glossary/protocol.md
• docs/glossary/resolvedmodelroute.md
• docs/glossary/retention-watermark.md
• docs/glossary/semconv.md
• docs/glossary/session.md
• docs/glossary/sessionexecutionplan.md
• docs/glossary/snapshot.md
• docs/glossary/stream.md
• docs/glossary/tenant.md
• docs/glossary/transport.md
• docs/glossary/type-url.md
• docs/glossary/wasm.md
• docs/glossary/wasmtime.md
• docs/glossary/wit.md
• docs/glossary/workspace.md
• docs/glossary/write-precondition.md

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch yordis/docs-glossary

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