config :: support multiple configuration directories and update related methods

[cfkoehler]

No description provided.

[Copilot]

Pull request overview

Adds command-line and runtime support for specifying multiple configuration directories, and propagates this multi-dir value through system properties and the /api/env endpoint.

Changes:

• Update BaseCommand --config/-c handling to accept multiple directories and expose getConfigDirs() / getConfigDirsProperty().
• Update server startup validation and /api/env output to use the comma-joined config directory list.
• Add/adjust tests to cover multi-config-dir parsing and propagation.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/main/java/emissary/command/BaseCommand.java	Parses --config as a list, adds multi-dir accessors, and sets emissary.config.dir to the comma-joined absolute paths.
src/main/java/emissary/server/EmissaryServer.java	Validates emissary.config.dir as a comma-separated list of existing paths during server init.
src/main/java/emissary/server/api/Env.java	Returns the multi-dir config string for CONFIG_DIR in the env API response.
src/test/java/emissary/command/ServerCommandIT.java	Adds integration tests for multi-config-dir parsing, property propagation, and rejection of missing dirs.
src/test/java/emissary/server/api/EmissaryApiTest.java	Updates mocks to support the new getConfigDirsProperty() usage.

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[memny]

Code looks good and tests pass but I think this breaks the @{CONFIG_DIR} directive. I setup an alternate config directory and got the following error on startup:

emissary.core.EmissaryException: Unable to configure Emissary Node services
Caused by: java.io.IOException: In node.cfg, cannot find IMPORT_FILE: /home/user/projects/emissary/target-idea/config,/home/user/.config/emissary/places.cfg on the specified path. Make sure IMPORT_FILE (places.cfg) exists, and the file path is correct.

My cli parameters were emissary.Emissary server -c /home/user/projects/emissary/target-idea/config,/home/user/.config/emissary -a 1 --flavor FLAVOR --outputRoot=/home/user/projects/emissary/target/localoutput

[cfkoehler]

Code looks good and tests pass but I think this breaks the @{CONFIG_DIR} directive. I setup an alternate config directory and got the following error on startup:

emissary.core.EmissaryException: Unable to configure Emissary Node services
Caused by: java.io.IOException: In node.cfg, cannot find IMPORT_FILE: /home/user/projects/emissary/target-idea/config,/home/user/.config/emissary/places.cfg on the specified path. Make sure IMPORT_FILE (places.cfg) exists, and the file path is correct.

My cli parameters were emissary.Emissary server -c /home/user/projects/emissary/target-idea/config,/home/user/.config/emissary -a 1 --flavor FLAVOR --outputRoot=/home/user/projects/emissary/target/localoutput

I did not test a startup like that. Will look into it. Thanks!