FEAT: add prompt suffix handling

[michelle-hadfield-nava]

Ticket

https://navalabs.atlassian.net/browse/DST-1403

Changes

added the ability to set a suffix to use different prompts

Context for reviewers

https://nava.slack.com/archives/C06ETE82UHM/p1767839825584939
See latest in https://nava.slack.com/archives/C06ETE82UHM/p1762200108857569

Testing

Use
http://localhost:3001/generate-referrals?suffix=keystone

Preview environment for frontend

• Service endpoint: https://p-134-frontend-dev-1933948974.us-east-1.elb.amazonaws.com/generate-referrals
• Deployed commit: 6a0f175

Preview environment for app

♻️ Environment destroyed ♻️

[github-actions]

Coverage report for frontend

St.❔	Category	Percentage	Covered / Total
🔴	Statements	54.32% (-0.41% 🔻)	377/694
🔴	Branches	50.2% (+0.41% 🔼)	124/247
🔴	Functions	59.63%	65/109
🔴	Lines	54.1% (-0.43% 🔻)	356/658

Show files with reduced coverage 🔻

St.❔	File	Statements	Branches	Functions	Lines
🔴	... / fetchResources.ts	8.57% (-1.43% 🔻)	0%	0%	8.82% (-1.52% 🔻)
🔴	... / fetchActionPlan.ts	3.85% (-0.08% 🔻)	0%	0%	4% (-0.08% 🔻)

Test suite run success

78 tests passing in 7 suites.

Report generated by 🧪jest coverage report action from 6a0f175

[Copilot]

Pull request overview

This pull request adds the ability to use a suffix query parameter to select different prompt templates for the referral generation feature. This enables the system to support region-specific prompts (e.g., Austin vs. Keystone area resources).

• Adds suffix parameter throughout the frontend-to-backend pipeline for generate-referrals
• Implements prompt name construction logic that appends the suffix to the base prompt name
• Adds new prompt version configuration for "generate_referrals_keystone"

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
frontend/src/util/fetchResources.ts	Adds optional suffix parameter and includes it in API request body when provided
frontend/src/util/fetchActionPlan.ts	Refactors request body construction (code style improvement, unrelated to feature)
frontend/src/components/ResourcesList.tsx	Formatting change to improve code readability (style improvement, unrelated to feature)
frontend/src/app/[locale]/generate-referrals/page.tsx	Extracts suffix from URL query parameters and passes it to fetchResources
app/src/pipelines/generate_referrals/pipeline_wrapper.py	Adds suffix parameter to run_api and _run methods, updates error message
app/src/pipelines/generate_action_plan/pipeline_wrapper.py	Refactors to pass prompt template at runtime rather than during setup
app/src/common/haystack_utils.py	Implements core logic to append suffix to prompt name when constructing full prompt identifier
app/src/app_config.py	Adds "generate_referrals_keystone" prompt version configuration

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

The error message will display "with suffix ''" when no suffix is provided, which could be confusing to users. Consider conditionally including the suffix part only when a suffix is actually provided, for example: f"The requested prompt version '{prompt_version_id}'{f' with suffix '{suffix}'' if suffix else ''} could not be retrieved..."

Suggested change

	detail=f"The requested prompt version '{prompt_version_id}' with suffix '{suffix}' could not be retrieved due to HTTP status {he.response.status_code}",
	detail=(
	f"The requested prompt version '{prompt_version_id}'"
	f"{f\" with suffix '{suffix}'\" if suffix else ''} "
	f"could not be retrieved due to HTTP status {he.response.status_code}"
	),

[Copilot]

The new suffix parameter handling in the get_phoenix_prompt function lacks test coverage. Consider adding tests to verify that the suffix is correctly appended to the prompt name when provided, and that the function behaves correctly when suffix is empty or not provided.