App build id attribute (#2591)

Co-authored-by: jason plumb <75337021+breedx-splk@users.noreply.github.com>

.chloggen/add_app_build_id.yaml

@@ -0,0 +1,22 @@
+# Use this changelog template to create an entry for release notes.
+#
+# If your change doesn't affect end users you should instead start
+# your pull request title with [chore] or use the "Skip Changelog" label.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the area of concern in the attributes-registry, (e.g. http, cloud, db)
+component: app
+
+# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Defines a new app.build_id attribute.
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+# The values here must be integers.
+issues: [2591]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:

docs/registry/attributes/app.md

@@ -9,6 +9,7 @@ Describes attributes related to client-side applications (e.g. web apps or mobil
 
 | Attribute | Type | Description | Examples | Stability |
 |---|---|---|---|---|
+| <a id="app-build-id" href="#app-build-id">`app.build_id`</a> | string | Unique identifier for a particular build or compilation of the application. | `6cff0a7e-cefc-4668-96f5-1273d8b334d0`; `9f2b833506aa6973a92fde9733e6271f`; `my-app-1.0.0-code-123` | ![Development](https://img.shields.io/badge/-development-blue) |
 | <a id="app-installation-id" href="#app-installation-id">`app.installation.id`</a> | string | A unique identifier representing the installation of an application on a specific device [1] | `2ab2916d-a51f-4ac8-80ee-45ac31a28092` | ![Development](https://img.shields.io/badge/-development-blue) |
 | <a id="app-screen-coordinate-x" href="#app-screen-coordinate-x">`app.screen.coordinate.x`</a> | int | The x (horizontal) coordinate of a screen coordinate, in screen pixels. | `0`; `131` | ![Development](https://img.shields.io/badge/-development-blue) |
 | <a id="app-screen-coordinate-y" href="#app-screen-coordinate-y">`app.screen.coordinate.y`</a> | int | The y (vertical) component of a screen coordinate, in screen pixels. | `12`; `99` | ![Development](https://img.shields.io/badge/-development-blue) |

docs/registry/entities/app.md

@@ -13,6 +13,12 @@
 
 **Description:** An app used directly by end users — like mobile, web, or desktop.
 
+**Identifying Attributes:**
+
+| Attribute  | Type | Description  | Examples  | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
+|---|---|---|---|---|---|
+| [`app.build_id`](/docs/registry/attributes/app.md) | string | Unique identifier for a particular build or compilation of the application. | `6cff0a7e-cefc-4668-96f5-1273d8b334d0`; `9f2b833506aa6973a92fde9733e6271f`; `my-app-1.0.0-code-123` | `Recommended` | ![Development](https://img.shields.io/badge/-development-blue) |
+
 **Other Attributes:**
 
 > :warning: This entity definition contains attributes without a role.

model/app/entities.yaml

@@ -7,3 +7,5 @@ groups:
       An app used directly by end users — like mobile, web, or desktop.
     attributes:
       - ref: app.installation.id
+      - ref: app.build_id
+        role: identifying

model/app/registry.yaml

@@ -62,3 +62,8 @@ groups:
           A widget is an application component, typically an on-screen visual
           GUI element.
         examples: [ "submit", "attack", "Clear Cart" ]
+      - id: app.build_id
+        type: string
+        stability: development
+        brief: 'Unique identifier for a particular build or compilation of the application.'
+        examples: ['6cff0a7e-cefc-4668-96f5-1273d8b334d0', '9f2b833506aa6973a92fde9733e6271f', 'my-app-1.0.0-code-123']