infra: rename http-gateway-spec.md to http-gateway-protocol-spec.md

Matches the portal source filename (http-gateway-protocol-spec.md).
Updates all internal links, sidebar slug, CODEOWNERS entry, and workflow
path triggers.

Author: marc0olo

.github/CODEOWNERS

@@ -7,7 +7,7 @@
 # Interface specification — additional required reviewers for spec files and attachments.
 # GitHub CODEOWNERS: last matching rule wins, so these override the wildcard above.
 docs/references/ic-interface-spec/* @dfinity/interface-spec @dfinity/team-dsm @dfinity/consensus @dfinity/dx
-docs/references/http-gateway-spec.md @dfinity/interface-spec @dfinity/team-dsm @dfinity/consensus @dfinity/dx
+docs/references/http-gateway-protocol-spec.md @dfinity/interface-spec @dfinity/team-dsm @dfinity/consensus @dfinity/dx
 public/references/ic.did @dfinity/interface-spec @dfinity/team-dsm @dfinity/consensus @dfinity/dx
 public/references/certificates.cddl @dfinity/interface-spec @dfinity/team-dsm @dfinity/consensus @dfinity/dx
 public/references/requests.cddl @dfinity/interface-spec @dfinity/team-dsm @dfinity/consensus @dfinity/dx

.github/workflows/interface-spec-slack.yml

@@ -8,7 +8,7 @@ on:
       - .github/workflows/interface-spec-tag.yml
       - .github/workflows/interface-spec-slack.yml
       - docs/references/ic-interface-spec/**
-      - docs/references/http-gateway-spec.md
+      - docs/references/http-gateway-protocol-spec.md
       - public/references/certificates.cddl
       - public/references/requests.cddl
       - public/references/http-gateway.did

.github/workflows/interface-spec-tag.yml

@@ -7,7 +7,7 @@ on:
       - .github/workflows/interface-spec-tag.yml
       - .github/workflows/interface-spec-slack.yml
       - docs/references/ic-interface-spec/**
-      - docs/references/http-gateway-spec.md
+      - docs/references/http-gateway-protocol-spec.md
       - public/references/certificates.cddl
       - public/references/requests.cddl
       - public/references/http-gateway.did

.github/workflows/interface-spec.yml

@@ -5,7 +5,7 @@ on:
     paths:
       - .github/workflows/interface-spec.yml
       - docs/references/ic-interface-spec/**
-      - docs/references/http-gateway-spec.md
+      - docs/references/http-gateway-protocol-spec.md
       - public/references/certificates.cddl
       - public/references/requests.cddl
       - public/references/http-gateway.did

docs/guides/frontends/certification.md

@@ -318,6 +318,6 @@ For the full working example including a backend canister, see the [certified-co
 - [Asset canister](asset-canister.md): deploy and configure the standard asset canister with automatic certification
 - [Certified variables](../backends/certified-variables.md): certify Candid query responses from backend canisters
 - [Security concepts](../../concepts/security.md): why query integrity matters
-- [HTTP Gateway specification](../../references/http-gateway-spec.md): how boundary nodes verify responses
+- [HTTP Gateway specification](../../references/http-gateway-protocol-spec.md): how boundary nodes verify responses
 
 <!-- Upstream: informed by dfinity/response-verification — packages/ic-asset-certification/README.md, packages/ic-http-certification/README.md, packages/certificate-verification-js/README.md, packages/certificate-verification-js/src/index.ts, examples/certification/certified-counter; dfinity/portal — docs/building-apps/frontends/asset-security.mdx; dfinity/icskills — skills/certified-variables/SKILL.md, skills/asset-canister/SKILL.md -->

docs/references/http-gateway-spec.md …references/http-gateway-protocol-spec.mddocs/references/http-gateway-spec.md renamed to docs/references/http-gateway-protocol-spec.md docs/references/http-gateway-spec.md renamed to docs/references/http-gateway-protocol-spec.md

@@ -251,6 +251,6 @@ In the pruned tree, the `lookup_path` function behaves as follows:
 
 ## The HTTP Gateway protocol {#http-gateway}
 
-The HTTP Gateway Protocol has been moved into its own [specification](../http-gateway-spec.md).
+The HTTP Gateway Protocol has been moved into its own [specification](../http-gateway-protocol-spec.md).
 
 <!-- Upstream: sync from dfinity/portal — docs/references/ic-interface-spec.md -->

docs/references/ic-interface-spec/certification.md

@@ -33,7 +33,7 @@ Technical reference material for ICP development. These pages cover exact specif
 ## Specifications
 
 - **[IC Interface Specification](ic-interface-spec/index.md)**: System API, HTTPS interface, certified data, management canister, and formal specification of the Internet Computer.
-- **[HTTP Gateway Specification](http-gateway-spec.md)**: How boundary nodes serve canister HTTP responses with certification verification.
+- **[HTTP Gateway Specification](http-gateway-protocol-spec.md)**: How boundary nodes serve canister HTTP responses with certification verification.
 - **[Candid Specification](candid-spec.md)**: The Candid interface description language: type system, encoding, and subtyping rules.
 - **[Internet Identity Specification](internet-identity-spec.md)**: Delegation chains, passkey management, and canister signatures.
 

docs/references/index.md

@@ -241,7 +241,7 @@ This feature is intended to allow more flexibility with respect to the origins o
 `https://<canister_id>.ic0.app` and `https://<canister_id>.raw.ic0.app` do _not_ issue the same principals by default . However, this feature can also be used to map `https://<canister_id>.raw.ic0.app` to `https://<canister_id>.ic0.app` principals or vice versa.
 :::
 
-In order for Internet Identity to accept the `derivationOrigin` the origin of the client application must be listed in the JSON object served on the URL `https://<canister_id>.icp0.io/.well-known/ii-alternative-origins` (i.e. the file must be hosted by an ICP canister that must implement the `http_request` query call as specified [here](./http-gateway-spec.md)).
+In order for Internet Identity to accept the `derivationOrigin` the origin of the client application must be listed in the JSON object served on the URL `https://<canister_id>.icp0.io/.well-known/ii-alternative-origins` (i.e. the file must be hosted by an ICP canister that must implement the `http_request` query call as specified [here](./http-gateway-protocol-spec.md)).
 
 
 ### JSON Schema {#alternative-frontend-origins-schema}
@@ -1411,7 +1411,7 @@ See [here](../guides/authentication/verifiable-credentials.md) for the specifica
 
 ### HTTP gateway protocol
 
-The methods `http_request` and `http_request_update` serve the front-end assets to browesers. See [here](./http-gateway-spec.md) for additional details.
+The methods `http_request` and `http_request_update` serve the front-end assets to browesers. See [here](./http-gateway-protocol-spec.md) for additional details.
 
 ### Internal APIs
 
@@ -1475,7 +1475,7 @@ Link replacements from source (source used absolute/relative paths pointing outs
   - internetcomputer.org [/docs]/current/references/ic-interface-spec/#canister-signatures → ./ic-interface-spec/index.md#canister-signatures (×2)
   - internetcomputer.org [/docs]/current/references/ic-interface-spec#authentication → ./ic-interface-spec/https-interface.md#authentication
   - internetcomputer.org [/docs]/current/references/ic-interface-spec/#system-api-inspect-message → ./ic-interface-spec/canister-interface.md#system-api-inspect-message
-  - internetcomputer.org [/docs]/current/references/http-gateway-protocol-spec → ./http-gateway-spec.md
+  - internetcomputer.org [/docs]/current/references/http-gateway-protocol-spec → ./http-gateway-protocol-spec.md
   - internetcomputer.org [/docs]/current/developer-docs/web-apps/custom-domains/using-custom-domains → ../guides/frontends/custom-domains.md
   - vc-spec.md (relative, same dir in source repo) → ../guides/authentication/verifiable-credentials.md
 Other changes from source:

docs/references/internet-identity-spec.md

@@ -129,7 +129,7 @@ export const sidebar = [
       { slug: "references/cycles-costs" },
       { slug: "references/subnet-types" },
       { slug: "references/execution-errors" },
-      { slug: "references/http-gateway-spec" },
+      { slug: "references/http-gateway-protocol-spec" },
       { slug: "references/candid-spec" },
       { slug: "references/internet-identity-spec" },
       {