chore(db): remove Qdrant semantic search infrastructure (#816)

The Qdrant index (commonwealth collection, 475 points) was stale —
pointing at old worktree paths from previous sprints with no
maintenance. Grep covers all current search needs.

Removed: qdrant_connector.py, wrapper scripts (qdrant-search,
qdrant-index, qdrant-health, qdrant-count), /docs-search skill,
Qdrant/Ollama config entries, and all active references in agents,
rules, briefings, DEVOPS, CLAUDE.md, and TEAM.md. The commonwealth
collection was dropped from tower-of-joy:6333.

Historical references in discussion archives and sprint briefings
are preserved as-is.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.claude/agents/README.md

@@ -115,8 +115,7 @@ Synthesize findings.
 
 ### Qatux (Documenter & Librarian)
 - Core team member — participates in discussion rounds as documenter
-- Manages document search via `/docs-search` skill
-- Maintains DECISIONS.md, DISCUSSION.md, briefings, and Qdrant search index
+- Maintains DECISIONS.md, DISCUSSION.md, and briefings
 - Answers "did we discuss this?" with citations
 
 ## Extending the team

.claude/agents/qatux.md

@@ -1,6 +1,6 @@
 ---
 name: qatux
-description: Documenter and Librarian for the Settled Reach game project. Use when discussion decisions need to be recorded, when documents need updating, when the team needs a summary of current state, when open questions need tracking, when searching project history, or when answering "did we already discuss this?". Maintains decisions/ domain files, DISCUSSION.md, briefings, and the Qdrant search index.
+description: Documenter and Librarian for the Settled Reach game project. Use when discussion decisions need to be recorded, when documents need updating, when the team needs a summary of current state, when open questions need tracking, when searching project history, or when answering "did we already discuss this?". Maintains decisions/ domain files, DISCUSSION.md, and briefings.
 tools: Read, Glob, Grep, Edit, Write, Bash
 model: sonnet
 memory: project
@@ -28,7 +28,6 @@ Named after Qatux, the Raiel with perfect memory who helped Paula Myo by recalli
 - Provide "state of the project" summaries when asked
 
 ### Knowledge management
-- Maintain the Qdrant document index via /docs-search skill
 - Update briefing files when decisions change
 - Answer retrieval questions: "did we discuss X?", "what did we decide about Y?"
 - Catch staleness in briefings and flag for update
@@ -44,7 +43,7 @@ Named after Qatux, the Raiel with perfect memory who helped Paula Myo by recalli
 - **Work in dedicated round files:** All new rounds happen in `docs/discussions/round-NN-topic.md` from the start. DISCUSSION.md is retired for new content.
 - **Update the discussion index ONLY when closing:** After a round is formally closed, update `docs/discussions/README.md` with the round entry (number, topic, decisions produced, file link).
 - **Update briefings:** After a round produces new decisions, update the relevant agent briefing files in `docs/briefings/`.
-- **Re-index documents:** After archiving or updating documents, re-index them in Qdrant via `tooling/db/qdrant-index <path>`.
+- **Update briefings:** After archiving or updating documents, update the relevant agent briefing files in `docs/briefings/`.
 
 ## Team workflow (mandatory)
 

.claude/rules/local-services.md

@@ -3,6 +3,3 @@
 Endpoints are also preconfigured in `tooling/db/config.json`.
 
 - **Gitea:** `http://git.schweitz.internal` (login: `schweitz`)
-- **Qdrant:** `http://tower-of-joy:6333/`
-- **Ollama:** `http://tower-of-joy:11434/` (nomic-embed-text)
-- **Collection:** `commonwealth` (768 dimensions, cosine distance)

.claude/rules/project-structure.md

@@ -26,12 +26,11 @@ docs/
 db/
   schema.sql          # Database schema
 tooling/
-  db/                 # Connector scripts for SQLite, Qdrant, and audio
+  db/                 # Connector scripts for SQLite and audio
     config.json       # Endpoint configuration
     ticket            # Ticket CLI
     sprint            # Sprint lifecycle CLI
     sqlite_connector.py   # SQLite mini MCP
-    qdrant_connector.py   # Qdrant + ollama mini MCP
     audio_connector.py    # Stable Audio Open connector
 .claude/
   agents/             # Agent personality files

.claude/settings.json

@@ -31,10 +31,6 @@
       "Bash(tooling/db/sprint *)",
       "Bash(tooling/db/sqlite-query *)",
       "Bash(tooling/db/sqlite-exec *)",
-      "Bash(tooling/db/qdrant-search *)",
-      "Bash(tooling/db/qdrant-index *)",
-      "Bash(tooling/db/qdrant-health)",
-      "Bash(tooling/db/qdrant-count)",
       "Bash(tooling/db/sqlite-init)",
       "Bash(tooling/db/decisions-sync)",
       "Bash(tooling/db/decision *)",

.claude/skills/docs-search/SKILL.md

@@ -1,55 +0,0 @@
----
-name: docs-search
-description: >
-  Search project documents using semantic search (Qdrant + ollama) or grep fallback.
-  Use when the user asks "did we discuss X?", "find references to Y", "search docs",
-  or invokes /docs-search. Wraps the qdrant_connector.py for semantic document search.
-user-invocable: true
-allowed-tools: Bash, Read, Grep, Glob
----
-
-# Search Docs Skill
-
-Semantic search across project documents. Endpoints are in
-`.claude/rules/local-services.md`. This skill covers advanced operations
-and workflows.
-
-## Advanced Commands
-
-### Index a single chunk
-
-For precise indexing of specific content:
-```bash
-python3 tooling/db/qdrant_connector.py index "unique-id" "Text content to index" --metadata source=manual heading="Custom heading"
-```
-
-### Create collection
-
-Initialize the Qdrant collection (run once during setup):
-```bash
-python3 tooling/db/qdrant_connector.py create-collection
-```
-
-## Bulk Indexing
-
-Index all project documents at once:
-```bash
-for f in decisions/*.md DISCUSSION.md TEAM.md docs/discussions/*.md docs/briefings/*.md; do
-  tooling/db/qdrant-index "$f"
-done
-```
-
-## Fallback
-
-If Qdrant or ollama is unreachable, fall back to grep-based search:
-```bash
-grep -r -i "search term" decisions/ DISCUSSION.md docs/ --include="*.md"
-```
-
-## Workflow
-
-1. **Qatux (Librarian)** is the primary user of this skill
-2. After each discussion round, index the archived round file
-3. After briefing updates, re-index affected briefings
-4. After decision changes, re-index the relevant decisions/*.md domain files
-5. Use search to answer "did we discuss this?" questions with citations