feat(license): add Lite SKU; remove user-facing free trial

Two coupled changes:

1. Lite tier
   - New Tier.LITE in src/license/schema.py.
   - FEATURES_BY_TIER[Tier.LITE] = {Deduplicator, Text Cleaner,
     Format Standardizer}. The three universally-useful tools that
     cover the most common bookkeeping / RevOps / Klaviyo prep
     workflows. Other six tools require Core.
   - i18n: license.tier_lite, license.feature_locked_title,
     license.feature_locked_body, license.upgrade_link,
     license.status_locked (en + es).
   - Per-tool feature gate at every GUI tool page
     (require_feature_or_render_upgrade) and every tool CLI
     (guard(feature=...)). A locked tool renders an upgrade
     prompt + Manage-license button (GUI) or exits with code 2
     (CLI).
   - Home grid: tool cards the user's tier doesn't unlock get a
     red 🔒 Locked badge in place of green Ready.

2. Trial removed
   - Activation form's "Start 1-year trial" button removed.
   - license_cli's `trial` subcommand removed.
   - activation.trial_button / activation.trial_help i18n keys
     dropped (pack parity test stays green).
   - Tier.TRIAL stays in the enum (back-compat with any field-
     tested trial licenses); LicenseManager._mint stays internal
     for tests and the seller's key generator.
   - Decision logged in DECISIONS §9b: a 1-year all-features
     trial undercuts paid Lite; paid-only keeps tier economics
     clean.

Tests (+29 net): +17 Lite-tier unit/guard tests + 13 Lite-tier
GUI tests + 1 trial-absent assertion - 2 trial CLI tests - 1
trial GUI button test. Total: 1995 → 2024.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/gui/pages/1_Deduplicator.py

@@ -22,11 +22,14 @@ from src.gui.components import (
     hide_streamlit_chrome,
     match_group_card,
     pickup_or_upload,
+    require_feature_or_render_upgrade,
     require_normalization_gate,
     results_summary,
 )
+from src.license import FeatureFlag
 
 hide_streamlit_chrome()
+require_feature_or_render_upgrade(FeatureFlag.DEDUPLICATOR)
 require_normalization_gate()
 
 # ---------------------------------------------------------------------------

src/gui/pages/2_Text_Cleaner.py

@@ -18,8 +18,10 @@ from src.gui.components import (
     hide_streamlit_chrome,
     pickup_or_upload,
     render_hidden_aware_preview,
+    require_feature_or_render_upgrade,
     require_normalization_gate,
 )
+from src.license import FeatureFlag
 from src.core.text_clean import (
     PRESETS,
     CleanOptions,
@@ -29,6 +31,7 @@ from src.core.text_clean import (
 )
 
 hide_streamlit_chrome()
+require_feature_or_render_upgrade(FeatureFlag.TEXT_CLEANER)
 require_normalization_gate()
 
 

src/gui/pages/3_Format_Standardizer.py

@@ -17,6 +17,7 @@ if str(_project_root) not in sys.path:
 from src.gui.components import (
     hide_streamlit_chrome,
     pickup_or_upload,
+    require_feature_or_render_upgrade,
     require_normalization_gate,
 )
 from src.core.format_standardize import (
@@ -25,8 +26,10 @@ from src.core.format_standardize import (
     StandardizeOptions,
     standardize_dataframe,
 )
+from src.license import FeatureFlag
 
 hide_streamlit_chrome()
+require_feature_or_render_upgrade(FeatureFlag.FORMAT_STANDARDIZER)
 require_normalization_gate()
 
 

src/gui/pages/4_Missing_Values.py

@@ -17,6 +17,7 @@ if str(_project_root) not in sys.path:
 from src.gui.components import (
     hide_streamlit_chrome,
     pickup_or_upload,
+    require_feature_or_render_upgrade,
     require_normalization_gate,
 )
 from src.core.missing import (
@@ -26,8 +27,10 @@ from src.core.missing import (
     handle_missing,
     profile_missing,
 )
+from src.license import FeatureFlag
 
 hide_streamlit_chrome()
+require_feature_or_render_upgrade(FeatureFlag.MISSING_HANDLER)
 require_normalization_gate()
 
 

src/gui/pages/5_Column_Mapper.py

@@ -17,6 +17,7 @@ if str(_project_root) not in sys.path:
 from src.gui.components import (
     hide_streamlit_chrome,
     pickup_or_upload,
+    require_feature_or_render_upgrade,
     require_normalization_gate,
 )
 from src.core.column_mapper import (
@@ -27,8 +28,10 @@ from src.core.column_mapper import (
     infer_mapping,
     map_columns,
 )
+from src.license import FeatureFlag
 
 hide_streamlit_chrome()
+require_feature_or_render_upgrade(FeatureFlag.COLUMN_MAPPER)
 require_normalization_gate()
 
 

src/gui/pages/6_Outlier_Detector.py

@@ -11,9 +11,15 @@ _project_root = Path(__file__).resolve().parent.parent.parent.parent
 if str(_project_root) not in sys.path:
     sys.path.insert(0, str(_project_root))
 
-from src.gui.components import hide_streamlit_chrome, require_normalization_gate
+from src.gui.components import (
+    hide_streamlit_chrome,
+    require_feature_or_render_upgrade,
+    require_normalization_gate,
+)
+from src.license import FeatureFlag
 
 hide_streamlit_chrome()
+require_feature_or_render_upgrade(FeatureFlag.OUTLIER_DETECTOR)
 require_normalization_gate()
 
 # ---------------------------------------------------------------------------

src/gui/pages/7_Multi_File_Merger.py

@@ -11,9 +11,15 @@ _project_root = Path(__file__).resolve().parent.parent.parent.parent
 if str(_project_root) not in sys.path:
     sys.path.insert(0, str(_project_root))
 
-from src.gui.components import hide_streamlit_chrome, require_normalization_gate
+from src.gui.components import (
+    hide_streamlit_chrome,
+    require_feature_or_render_upgrade,
+    require_normalization_gate,
+)
+from src.license import FeatureFlag
 
 hide_streamlit_chrome()
+require_feature_or_render_upgrade(FeatureFlag.MULTI_FILE_MERGER)
 require_normalization_gate()
 
 # ---------------------------------------------------------------------------

src/gui/pages/8_Validator_Reporter.py

@@ -11,9 +11,15 @@ _project_root = Path(__file__).resolve().parent.parent.parent.parent
 if str(_project_root) not in sys.path:
     sys.path.insert(0, str(_project_root))
 
-from src.gui.components import hide_streamlit_chrome, require_normalization_gate
+from src.gui.components import (
+    hide_streamlit_chrome,
+    require_feature_or_render_upgrade,
+    require_normalization_gate,
+)
+from src.license import FeatureFlag
 
 hide_streamlit_chrome()
+require_feature_or_render_upgrade(FeatureFlag.VALIDATOR_REPORTER)
 require_normalization_gate()
 
 # ---------------------------------------------------------------------------

src/gui/pages/9_Pipeline_Runner.py

@@ -17,6 +17,7 @@ if str(_project_root) not in sys.path:
 from src.gui.components import (
     hide_streamlit_chrome,
     pickup_or_upload,
+    require_feature_or_render_upgrade,
     require_normalization_gate,
 )
 from src.core.pipeline import (
@@ -28,8 +29,10 @@ from src.core.pipeline import (
     run_pipeline,
     validate_pipeline,
 )
+from src.license import FeatureFlag
 
 hide_streamlit_chrome()
+require_feature_or_render_upgrade(FeatureFlag.PIPELINE_RUNNER)
 require_normalization_gate()