feat: add preflight manifest check to initialize and update actions

[nicomiguelino]

Summary

• Adds a new local preflight composite action that installs yq (v4.53.2) and checks the manifest file before proceeding
• For update: skips remaining steps if the manifest file is missing or has no id field
• For initialize: skips remaining steps if the manifest already has an id (app already initialized)

Closes #9.

[Copilot]

Pull request overview

Adds a reusable “preflight” composite action to validate an Edge App manifest before running initialize/update, and gates the remaining steps to skip gracefully when the manifest state indicates the action should not proceed (missing/invalid id for update, already-initialized for initialize).

Changes:

• Added preflight composite action that installs yq and evaluates manifest eligibility.
• Updated update action to run preflight first and skip all subsequent steps when should_skip is true.
• Updated initialize action to run preflight first and skip all subsequent steps when should_skip is true.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
preflight/action.yml	New composite action to install yq and decide whether downstream steps should be skipped based on manifest state.
update/action.yml	Adds preflight step and guards subsequent steps to avoid deploying when manifest is missing/invalid.
initialize/action.yml	Adds preflight step and guards subsequent steps to avoid re-initializing an already initialized app.

Comments suppressed due to low confidence (2)

preflight/action.yml:24

• This downloads and executes a prebuilt binary without any integrity verification. Consider pinning by commit SHA and verifying a published checksum (or using a package manager / dedicated setup action) to reduce supply-chain risk.

        wget https://github.com/mikefarah/yq/releases/download/v4.53.2/yq_linux_amd64 \
          -O /usr/local/bin/yq && chmod +x /usr/local/bin/yq

preflight/action.yml:49

• The id check can incorrectly treat an empty string id (e.g., id: "") as present because yq '.id' outputs quoted strings. Prefer a raw/evaluable query (e.g., yq -r '.id // ""' with a single evaluation) so the guard truly enforces non-empty id values.

          elif [ -z "$(yq '.id' "$MANIFEST_FILE")" ] || [ "$(yq '.id' "$MANIFEST_FILE")" = "null" ]; then
            echo "Manifest file '$MANIFEST_FILE' has no 'id' field. Skipping deployment."
            SHOULD_SKIP=true
          fi
        elif [ "${{ inputs.mode }}" = "initialize" ]; then
          if [ -f "$MANIFEST_FILE" ] && \
             [ -n "$(yq '.id' "$MANIFEST_FILE")" ] && \
             [ "$(yq '.id' "$MANIFEST_FILE")" != "null" ]; then

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

Comments suppressed due to low confidence (2)

preflight/action.yml:51

• yq '.id' is executed multiple times; capture the value once (or use yq -e and rely on exit status) to avoid redundant work and potential inconsistencies if the file changes between calls.

          elif [ -z "$(yq '.id' "$MANIFEST_FILE")" ] || [ "$(yq '.id' "$MANIFEST_FILE")" = "null" ]; then
            echo "Manifest file '$MANIFEST_FILE' has no 'id' field. Skipping deployment."
            SHOULD_SKIP=true
          fi
        elif [ "${{ inputs.mode }}" = "initialize" ]; then
          if [ -f "$MANIFEST_FILE" ] && \
             [ -n "$(yq '.id' "$MANIFEST_FILE")" ] && \
             [ "$(yq '.id' "$MANIFEST_FILE")" != "null" ]; then

preflight/action.yml:49

• If inputs.mode is not exactly update or initialize, the script silently falls through with SHOULD_SKIP=false, which could lead to unintended deployments. Consider validating mode and failing fast (or explicitly setting should_skip=true) on unknown values.

        if [ "${{ inputs.mode }}" = "update" ]; then
          if [ ! -f "$MANIFEST_FILE" ]; then
            echo "Manifest file '$MANIFEST_FILE' not found. Skipping deployment."
            SHOULD_SKIP=true
          elif [ -z "$(yq '.id' "$MANIFEST_FILE")" ] || [ "$(yq '.id' "$MANIFEST_FILE")" = "null" ]; then
            echo "Manifest file '$MANIFEST_FILE' has no 'id' field. Skipping deployment."
            SHOULD_SKIP=true
          fi
        elif [ "${{ inputs.mode }}" = "initialize" ]; then
          if [ -f "$MANIFEST_FILE" ] && \

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

Comments suppressed due to low confidence (1)

preflight/action.yml:51

• yq '.id' is executed multiple times in the same conditional, which is unnecessary work and makes the logic harder to read/maintain. Capture the id value once into a variable (or use a single yq -e predicate) and reuse it for the null/empty checks.

          elif [ -z "$(yq '.id' "$MANIFEST_FILE")" ] || [ "$(yq '.id' "$MANIFEST_FILE")" = "null" ]; then
            echo "Manifest file '$MANIFEST_FILE' has no 'id' field. Skipping deployment."
            SHOULD_SKIP=true
          fi
        elif [ "${{ inputs.mode }}" = "initialize" ]; then
          if [ -f "$MANIFEST_FILE" ] && \
             [ -n "$(yq '.id' "$MANIFEST_FILE")" ] && \
             [ "$(yq '.id' "$MANIFEST_FILE")" != "null" ]; then