move pi-mono into companion-cloud as apps/companion-os

- Copy all pi-mono source into apps/companion-os/
- Update Dockerfile to COPY pre-built binary instead of downloading from GitHub Releases
- Update deploy-staging.yml to build pi from source (bun compile) before Docker build
- Add apps/companion-os/** to path triggers
- No more cross-repo dispatch needed

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/coding-agent/test/fixtures/skills/consecutive-hyphens/SKILL.md

@@ -0,0 +1,8 @@
+---
+name: bad--name
+description: A skill with consecutive hyphens in the name.
+---
+
+# Consecutive Hyphens
+
+This skill has consecutive hyphens in its name.

packages/coding-agent/test/fixtures/skills/disable-model-invocation/SKILL.md

@@ -0,0 +1,9 @@
+---
+name: disable-model-invocation
+description: A skill that cannot be invoked by the model.
+disable-model-invocation: true
+---
+
+# Manual Only Skill
+
+This skill can only be invoked via /skill:disable-model-invocation.

packages/coding-agent/test/fixtures/skills/invalid-name-chars/SKILL.md

@@ -0,0 +1,8 @@
+---
+name: Invalid_Name
+description: A skill with invalid characters in the name.
+---
+
+# Invalid Name
+
+This skill has uppercase and underscore in the name.

packages/coding-agent/test/fixtures/skills/invalid-yaml/SKILL.md

@@ -0,0 +1,8 @@
+---
+name: invalid-yaml
+description: [unclosed bracket
+---
+
+# Invalid YAML Skill
+
+This skill has invalid YAML in the frontmatter.

packages/coding-agent/test/fixtures/skills/long-name/SKILL.md

@@ -0,0 +1,8 @@
+---
+name: this-is-a-very-long-skill-name-that-exceeds-the-sixty-four-character-limit-set-by-the-standard
+description: A skill with a name that exceeds 64 characters.
+---
+
+# Long Name
+
+This skill's name is too long.

packages/coding-agent/test/fixtures/skills/missing-description/SKILL.md

@@ -0,0 +1,7 @@
+---
+name: missing-description
+---
+
+# Missing Description
+
+This skill has no description field.

packages/coding-agent/test/fixtures/skills/multiline-description/SKILL.md

@@ -0,0 +1,11 @@
+---
+name: multiline-description
+description: |
+  This is a multiline description.
+  It spans multiple lines.
+  And should be normalized.
+---
+
+# Multiline Description Skill
+
+This skill tests that multiline YAML descriptions are normalized to single lines.

packages/coding-agent/test/fixtures/skills/name-mismatch/SKILL.md

@@ -0,0 +1,8 @@
+---
+name: different-name
+description: A skill with a name that doesn't match the directory.
+---
+
+# Name Mismatch
+
+This skill's name doesn't match its parent directory.

packages/coding-agent/test/fixtures/skills/nested/child-skill/SKILL.md

@@ -0,0 +1,8 @@
+---
+name: child-skill
+description: A nested skill in a subdirectory.
+---
+
+# Child Skill
+
+This skill is nested in a subdirectory.

packages/coding-agent/test/fixtures/skills/no-frontmatter/SKILL.md

@@ -0,0 +1,3 @@
+# No Frontmatter
+
+This skill has no YAML frontmatter at all.

packages/coding-agent/test/fixtures/skills/unknown-field/SKILL.md

@@ -0,0 +1,10 @@
+---
+name: unknown-field
+description: A skill with an unknown frontmatter field.
+author: someone
+version: 1.0
+---
+
+# Unknown Field
+
+This skill has non-standard frontmatter fields.

packages/coding-agent/test/fixtures/skills/valid-skill/SKILL.md

@@ -0,0 +1,8 @@
+---
+name: valid-skill
+description: A valid skill for testing purposes.
+---
+
+# Valid Skill
+
+This is a valid skill that follows the Agent Skills standard.