feat: implement create_context_item API for Local Context Store

reports/month-01/week-02-local-storage.md

@@ -2,11 +2,11 @@
 
 Add one block for every fellow who contributed. Keep each block short.
 
-## Fellow 1: Full Name
+## Fellow 1: Alain Chan
 
-- **Topic:** Topic worked on
-- **What I did:** Describe the work you completed, the result you achieved, how you verified it, one challenge you addressed, and the main lesson you learned this week. Use at least 20 words.
-- **Public output:** [Post title](https://example.com/post) - Medium, X, LinkedIn, or another public platform
+- **Topic:** Capture / Create Context
+- **What I did:** I implemented the `create_context_item` API for the Local Context Store. It validates context type, title, content, source, tags, and importance before saving a new context item into SQLite. I verified it with the Week 2 storage test script and learned that useful local-first AI memory starts with clean, structured context capture.
+- **Public output:** [Why Local-First AI Starts With Good Context Capture](https://dev.to/alaindevs/why-local-first-ai-starts-with-good-context-capture-3d9g) - Dev.to
 
 ## Fellow 2: Full Name
 

src/python/local_first_ai/storage/create_context.py

@@ -0,0 +1,58 @@
+from __future__ import annotations
+
+from collections.abc import Iterable
+
+from local_first_ai.storage.db_contract import (
+    database_connection,
+    normalize_optional_text,
+    normalize_tags,
+    utc_now,
+    validate_context_type,
+    validate_importance,
+    validate_required_text,
+)
+
+
+def create_context_item(
+    context_type: str,
+    title: str,
+    content: str,
+    source: str | None = None,
+    tags: str | Iterable[str] | None = None,
+    importance: int = 1,
+) -> int:
+    context_type = validate_context_type(context_type)
+    title = validate_required_text(title, "title")
+    content = validate_required_text(content, "content")
+    source = normalize_optional_text(source, "source")
+    tags = normalize_tags(tags)
+    importance = validate_importance(importance)
+    timestamp = utc_now()
+
+    with database_connection() as connection:
+        cursor = connection.execute(
+            """
+            INSERT INTO context_items (
+                context_type,
+                title,
+                content,
+                source,
+                tags,
+                importance,
+                created_at,
+                updated_at
+            )
+            VALUES (?, ?, ?, ?, ?, ?, ?, ?)
+            """,
+            (
+                context_type,
+                title,
+                content,
+                source,
+                tags,
+                importance,
+                timestamp,
+                timestamp,
+            ),
+        )
+        return int(cursor.lastrowid)

tests/python/storage/week_02_test_report.md

@@ -2,7 +2,7 @@
 
 > Think of this report as the Week 2 checklist: what works, what is still waiting, and exactly what to fix.
 
-**Generated:** 2026-07-03T05:47:06+00:00
+**Generated:** 2026-07-05T20:27:50+00:00
 
 ## Where We Are
 
@@ -12,7 +12,7 @@ The shared base works. The remaining checks are waiting for the four fellow-owne
 
 | Passed | Waiting | Failed | Errors |
 |---:|---:|---:|---:|
-| 4 | 19 | 0 | 0 |
+| 7 | 16 | 0 | 0 |
 
 ### What the labels mean
 
@@ -33,14 +33,14 @@ The shared base works. The remaining checks are waiting for the four fellow-owne
 - **PASS:** Schema contains the shared columns and indexes - All assertions passed. (`test_schema_contains_the_shared_columns_and_indexes`)
 - **PASS:** Shared validation helpers - All assertions passed. (`test_shared_validation_helpers`)
 
-### Fellow 1 - Create context - WAITING
+### Fellow 1 - Create context - PASS
 
 - **File:** `src/python/local_first_ai/storage/create_context.py`
-- **Status:** File not added.
+- **Status:** All available asserted cases passed.
 
-- **WAITING:** Create rejects empty title and content - Not active yet. (`test_create_rejects_empty_title_and_content`)
-- **WAITING:** Create rejects invalid context type - Not active yet. (`test_create_rejects_invalid_context_type`)
-- **WAITING:** Create returns unique IDs and stores complete items - Not active yet. (`test_create_returns_unique_ids_and_stores_complete_items`)
+- **PASS:** Create rejects empty title and content - All assertions passed. (`test_create_rejects_empty_title_and_content`)
+- **PASS:** Create rejects invalid context type - All assertions passed. (`test_create_rejects_invalid_context_type`)
+- **PASS:** Create returns unique IDs and stores complete items - All assertions passed. (`test_create_returns_unique_ids_and_stores_complete_items`)
 
 ### Fellow 2 - Read context - WAITING
 
@@ -90,7 +90,6 @@ No implemented test case is failing right now.
 
 These are the next pieces to build. They are not broken tests:
 
-- **Fellow 1 - Create context:** `src/python/local_first_ai/storage/create_context.py` - file not added.
 - **Fellow 2 - Read context:** `src/python/local_first_ai/storage/read_context.py` - file not added.
 - **Fellow 3 - Search context:** `src/python/local_first_ai/storage/search_context.py` - file not added.
 - **Fellow 4 - Manage context:** `src/python/local_first_ai/storage/manage_context.py` - file not added.