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[P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover) #151

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[P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover)#151
#473
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Description

@AndresL230
AndresL230
opened on Jun 8, 2026

Part of the Agent migration epic — the final cutover (roadmap milestone: end of July, "gemini_service retired as primary LLM seam"). Owner: Jack.

Goal

Once all feature surfaces are migrated (the issues above), deprecate and remove the raw Gemini helpers.

Scope

  • Remove call_gemini, call_gemini_json, call_gemini_multiturn (and MODEL_LITE/MODEL_SMART constants) from backend/services/gemini_service.py, or reduce the file to the shared provider only.
  • Retire the legacy chat fallback last: learn.py:417,538,847 (_legacy_chat + action path) — kept intentionally per ADR 0001; this issue is where that ADR is revisited and the fallback removed once the agent path is proven in production.
  • Update/remove backend/tests/test_gemini_service.py accordingly.

Acceptance

  • No production code imports services.gemini_service helpers.
  • python -m pytest backend/tests/ -q green.
  • A short decision record in docs/decisions/ recording the retirement.

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var __re = new RegExp('^' + "github\\.com" + '
[P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover) · Issue #151 · SaplingLearn/Sapling · GitHub
    Skip to content
    [P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover) #151
    Closed
    #473
    Closed
    [P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover)#151
    #473
    Assignees
    Darkest-Teddy
    Labels
    P1High priorityagentsPydantic AI agents / LLM layerbackendBackend / API
    Description
    @AndresL230
    AndresL230
    opened on Jun 8, 2026
    Part of the Agent migration epic — the final cutover (roadmap milestone: end of July, "gemini_service retired as primary LLM seam"). Owner: Jack.
    Goal
    Once all feature surfaces are migrated (the issues above), deprecate and remove the raw Gemini helpers.
    Scope
    • Remove call_gemini, call_gemini_json, call_gemini_multiturn (and MODEL_LITE/MODEL_SMART constants) from backend/services/gemini_service.py, or reduce the file to the shared provider only.
    • Retire the legacy chat fallback last: learn.py:417,538,847 (_legacy_chat + action path) — kept intentionally per ADR 0001; this issue is where that ADR is revisited and the fallback removed once the agent path is proven in production.
    • Update/remove backend/tests/test_gemini_service.py accordingly.
    Acceptance
    • No production code imports services.gemini_service helpers.
    • python -m pytest backend/tests/ -q green.
    • A short decision record in docs/decisions/ recording the retirement.
    Metadata
    Metadata
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    Labels
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    No projects
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      No milestone
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var __re = new RegExp('^' + ".*" + '
[P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover) · Issue #151 · SaplingLearn/Sapling · GitHub
      Skip to content
      [P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover) #151
      Closed
      #473
      Closed
      [P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover)#151
      #473
      Assignees
      Darkest-Teddy
      Labels
      P1High priorityagentsPydantic AI agents / LLM layerbackendBackend / API
      Description
      @AndresL230
      AndresL230
      opened on Jun 8, 2026
      Part of the Agent migration epic — the final cutover (roadmap milestone: end of July, "gemini_service retired as primary LLM seam"). Owner: Jack.
      Goal
      Once all feature surfaces are migrated (the issues above), deprecate and remove the raw Gemini helpers.
      Scope
      • Remove call_gemini, call_gemini_json, call_gemini_multiturn (and MODEL_LITE/MODEL_SMART constants) from backend/services/gemini_service.py, or reduce the file to the shared provider only.
      • Retire the legacy chat fallback last: learn.py:417,538,847 (_legacy_chat + action path) — kept intentionally per ADR 0001; this issue is where that ADR is revisited and the fallback removed once the agent path is proven in production.
      • Update/remove backend/tests/test_gemini_service.py accordingly.
      Acceptance
      • No production code imports services.gemini_service helpers.
      • python -m pytest backend/tests/ -q green.
      • A short decision record in docs/decisions/ recording the retirement.
      Metadata
      Metadata
      Assignees
      Labels
      P1High priorityagentsPydantic AI agents / LLM layerbackendBackend / API
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      Projects
      No projects
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        No milestone
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        No branches or pull requests
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(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
[P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover) · Issue #151 · SaplingLearn/Sapling · GitHub
        Skip to content
        [P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover) #151
        Closed
        #473
        Closed
        [P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover)#151
        #473
        Assignees
        Darkest-Teddy
        Labels
        P1High priorityagentsPydantic AI agents / LLM layerbackendBackend / API
        Description
        @AndresL230
        AndresL230
        opened on Jun 8, 2026
        Part of the Agent migration epic — the final cutover (roadmap milestone: end of July, "gemini_service retired as primary LLM seam"). Owner: Jack.
        Goal
        Once all feature surfaces are migrated (the issues above), deprecate and remove the raw Gemini helpers.
        Scope
        • Remove call_gemini, call_gemini_json, call_gemini_multiturn (and MODEL_LITE/MODEL_SMART constants) from backend/services/gemini_service.py, or reduce the file to the shared provider only.
        • Retire the legacy chat fallback last: learn.py:417,538,847 (_legacy_chat + action path) — kept intentionally per ADR 0001; this issue is where that ADR is revisited and the fallback removed once the agent path is proven in production.
        • Update/remove backend/tests/test_gemini_service.py accordingly.
        Acceptance
        • No production code imports services.gemini_service helpers.
        • python -m pytest backend/tests/ -q green.
        • A short decision record in docs/decisions/ recording the retirement.
        Metadata
        Metadata
        Assignees
        Labels
        P1High priorityagentsPydantic AI agents / LLM layerbackendBackend / API
        Type
        No type
        Projects
        No projects
          Milestone
          No milestone
          Relationships
          None yet
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          No branches or pull requests
          Issue actions
          
, 'i');
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(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
[P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover) · Issue #151 · SaplingLearn/Sapling · GitHub
          Skip to content
          [P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover) #151
          Closed
          #473
          Closed
          [P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover)#151
          #473
          Assignees
          Darkest-Teddy
          Labels
          P1High priorityagentsPydantic AI agents / LLM layerbackendBackend / API
          Description
          @AndresL230
          AndresL230
          opened on Jun 8, 2026
          Part of the Agent migration epic — the final cutover (roadmap milestone: end of July, "gemini_service retired as primary LLM seam"). Owner: Jack.
          Goal
          Once all feature surfaces are migrated (the issues above), deprecate and remove the raw Gemini helpers.
          Scope
          • Remove call_gemini, call_gemini_json, call_gemini_multiturn (and MODEL_LITE/MODEL_SMART constants) from backend/services/gemini_service.py, or reduce the file to the shared provider only.
          • Retire the legacy chat fallback last: learn.py:417,538,847 (_legacy_chat + action path) — kept intentionally per ADR 0001; this issue is where that ADR is revisited and the fallback removed once the agent path is proven in production.
          • Update/remove backend/tests/test_gemini_service.py accordingly.
          Acceptance
          • No production code imports services.gemini_service helpers.
          • python -m pytest backend/tests/ -q green.
          • A short decision record in docs/decisions/ recording the retirement.
          Metadata
          Metadata
          Assignees
          Labels
          P1High priorityagentsPydantic AI agents / LLM layerbackendBackend / API
          Type
          No type
          Projects
          No projects
            Milestone
            No milestone
            Relationships
            None yet
            Development
            No branches or pull requests
            Issue actions
            
, 'i');
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observer.observe(document.body, { childList: true, subtree: true });
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})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
[P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover) · Issue #151 · SaplingLearn/Sapling · GitHub
            Skip to content
            [P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover) #151
            Closed
            #473
            Closed
            [P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover)#151
            #473
            Assignees
            Darkest-Teddy
            Labels
            P1High priorityagentsPydantic AI agents / LLM layerbackendBackend / API
            Description
            @AndresL230
            AndresL230
            opened on Jun 8, 2026
            Part of the Agent migration epic — the final cutover (roadmap milestone: end of July, "gemini_service retired as primary LLM seam"). Owner: Jack.
            Goal
            Once all feature surfaces are migrated (the issues above), deprecate and remove the raw Gemini helpers.
            Scope
            • Remove call_gemini, call_gemini_json, call_gemini_multiturn (and MODEL_LITE/MODEL_SMART constants) from backend/services/gemini_service.py, or reduce the file to the shared provider only.
            • Retire the legacy chat fallback last: learn.py:417,538,847 (_legacy_chat + action path) — kept intentionally per ADR 0001; this issue is where that ADR is revisited and the fallback removed once the agent path is proven in production.
            • Update/remove backend/tests/test_gemini_service.py accordingly.
            Acceptance
            • No production code imports services.gemini_service helpers.
            • python -m pytest backend/tests/ -q green.
            • A short decision record in docs/decisions/ recording the retirement.
            Metadata
            Metadata
            Assignees
            Labels
            P1High priorityagentsPydantic AI agents / LLM layerbackendBackend / API
            Type
            No type
            Projects
            No projects
              Milestone
              No milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
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(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
[P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover) · Issue #151 · SaplingLearn/Sapling · GitHub
              Skip to content
              [P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover) #151
              Closed
              #473
              Closed
              [P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover)#151
              #473
              Assignees
              Darkest-Teddy
              Labels
              P1High priorityagentsPydantic AI agents / LLM layerbackendBackend / API
              Description
              @AndresL230
              AndresL230
              opened on Jun 8, 2026
              Part of the Agent migration epic — the final cutover (roadmap milestone: end of July, "gemini_service retired as primary LLM seam"). Owner: Jack.
              Goal
              Once all feature surfaces are migrated (the issues above), deprecate and remove the raw Gemini helpers.
              Scope
              • Remove call_gemini, call_gemini_json, call_gemini_multiturn (and MODEL_LITE/MODEL_SMART constants) from backend/services/gemini_service.py, or reduce the file to the shared provider only.
              • Retire the legacy chat fallback last: learn.py:417,538,847 (_legacy_chat + action path) — kept intentionally per ADR 0001; this issue is where that ADR is revisited and the fallback removed once the agent path is proven in production.
              • Update/remove backend/tests/test_gemini_service.py accordingly.
              Acceptance
              • No production code imports services.gemini_service helpers.
              • python -m pytest backend/tests/ -q green.
              • A short decision record in docs/decisions/ recording the retirement.
              Metadata
              Metadata
              Assignees
              Labels
              P1High priorityagentsPydantic AI agents / LLM layerbackendBackend / API
              Type
              No type
              Projects
              No projects
                Milestone
                No milestone
                Relationships
                None yet
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                No branches or pull requests
                Issue actions
                
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
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background: #1a1a2e !important;
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[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
[P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover) · Issue #151 · SaplingLearn/Sapling · GitHub
                Skip to content
                [P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover) #151
                Closed
                #473
                Closed
                [P1] Agent migration: retire call_gemini* + gemini_service.py (final cutover)#151
                #473
                Assignees
                Darkest-Teddy
                Labels
                P1High priorityagentsPydantic AI agents / LLM layerbackendBackend / API
                Description
                @AndresL230
                AndresL230
                opened on Jun 8, 2026
                Part of the Agent migration epic — the final cutover (roadmap milestone: end of July, "gemini_service retired as primary LLM seam"). Owner: Jack.
                Goal
                Once all feature surfaces are migrated (the issues above), deprecate and remove the raw Gemini helpers.
                Scope
                • Remove call_gemini, call_gemini_json, call_gemini_multiturn (and MODEL_LITE/MODEL_SMART constants) from backend/services/gemini_service.py, or reduce the file to the shared provider only.
                • Retire the legacy chat fallback last: learn.py:417,538,847 (_legacy_chat + action path) — kept intentionally per ADR 0001; this issue is where that ADR is revisited and the fallback removed once the agent path is proven in production.
                • Update/remove backend/tests/test_gemini_service.py accordingly.
                Acceptance
                • No production code imports services.gemini_service helpers.
                • python -m pytest backend/tests/ -q green.
                • A short decision record in docs/decisions/ recording the retirement.
                Metadata
                Metadata
                Assignees
                Labels
                P1High priorityagentsPydantic AI agents / LLM layerbackendBackend / API
                Type
                No type
                Projects
                No projects
                  Milestone
                  No milestone
                  Relationships
                  None yet
                  Development
                  No branches or pull requests
                  Issue actions