Noble Numbat update command — Part 1

Absolutely. Let’s apply a clean pgvector schema and insert a couple sample rows right now. This uses 768-dim vectors (good fit for most SentenceTransformers) and lives in your existing tokenspace DB.

1) Create schema + tables + indexes (idempotent)

sudo -u postgres psql -d tokenspace <<'SQL'
-- Ensure extension
CREATE EXTENSION IF NOT EXISTS vector;

-- === SCHEMA ===
CREATE SCHEMA IF NOT EXISTS lat;           -- "lattice" layer (docs/chunks/live text)
CREATE SCHEMA IF NOT EXISTS vec;           -- embeddings + search helpers

-- === TABLES ===
-- Raw documents (one row per source doc)
CREATE TABLE IF NOT EXISTS lat.documents (
  doc_id      BIGSERIAL PRIMARY KEY,
  path        TEXT UNIQUE,                 -- file path or logical id
  title       TEXT,
  mime        TEXT,
  bytes       BIGINT,
  created_at  TIMESTAMPTZ DEFAULT now(),
  updated_at  TIMESTAMPTZ DEFAULT now()
);

-- Text chunks (the pieces you embed)
CREATE TABLE IF NOT EXISTS lat.chunks (
  chunk_id    BIGSERIAL PRIMARY KEY,
  doc_id      BIGINT REFERENCES lat.documents(doc_id) ON DELETE CASCADE,
  ord         INT NOT NULL,                -- chunk order within doc
  content     TEXT NOT NULL,               -- chunk text
  created_at  TIMESTAMPTZ DEFAULT now()
);

-- Embeddings table (separate for clarity & re-embed)
-- 768 dims for SentenceTransformers / “Noemic”
CREATE TABLE IF NOT EXISTS vec.embeddings (
  chunk_id    BIGINT PRIMARY KEY REFERENCES lat.chunks(chunk_id) ON DELETE CASCADE,
  model       TEXT NOT NULL,               -- e.g., 'noemic-xxx'
  dims        INT  NOT NULL CHECK (dims = 768),
  embedding   vector(768) NOT NULL
);

-- Basic housekeeping trigger to keep documents.updated_at fresh
CREATE OR REPLACE FUNCTION lat.touch_updated_at() RETURNS trigger AS $$
BEGIN NEW.updated_at = now(); RETURN NEW; END $$ LANGUAGE plpgsql;

DROP TRIGGER IF EXISTS trg_docs_touch ON lat.documents;
CREATE TRIGGER trg_docs_touch BEFORE UPDATE ON lat.documents
FOR EACH ROW EXECUTE FUNCTION lat.touch_updated_at();

-- === INDEXES ===
-- Fast metadata/text filters
CREATE INDEX IF NOT EXISTS idx_chunks_docid_ord ON lat.chunks(doc_id, ord);

-- Vector similarity (IVFFlat). NOTE: set lists after you have some rows.
-- If you prefer HNSW and your pgvector build supports it, comment IVFFlat and use HNSW instead (shown below).
DO $$
BEGIN
   IF NOT EXISTS (SELECT 1 FROM pg_indexes WHERE schemaname='vec' AND indexname='embeddings_ivfflat_idx') THEN
      EXECUTE 'CREATE INDEX embeddings_ivfflat_idx ON vec.embeddings USING ivfflat (embedding vector_cosine_ops) WITH (lists = 100)';
   END IF;
END$$;

-- Optional (if your pgvector supports HNSW):
-- CREATE INDEX IF NOT EXISTS embeddings_hnsw_idx ON vec.embeddings USING hnsw (embedding vector_cosine_ops);

-- === VIEW: simple search helper (cosine distance) ===
CREATE OR REPLACE VIEW vec.search_view AS
SELECT
  c.chunk_id,
  d.doc_id,
  d.title,
  d.path,
  c.ord,
  c.content,
  e.embedding
FROM lat.chunks c
JOIN lat.documents d ON d.doc_id = c.doc_id
JOIN vec.embeddings e ON e.chunk_id = c.chunk_id;
SQL

2) Insert a couple sample rows (with a placeholder zero-vector)

(We’ll update with real SentenceTransformers embeddings later. For now, we generate a local zero vector of length 768 purely in SQL.)

“`bash
sudo -u postgres psql -d tokenspace <<'SQL'
— helper zero vector (float4[768] -> vector(768))
WITH z AS (
SELECT to_vector(

Got it — you want to remount the shared home directory from your main-desk machine onto this ougway machine, so you can browse it like a folder.

We need to confirm what type of share you set up on main-desk:

• Samba/Windows-style share (SMB/CIFS) → most common if you said “shared out” in a desktop context.
• NFS → if you deliberately set up NFS sharing.

I’ll assume it’s Samba/SMB, since that’s the usual default when you “share a folder” on Linux desktops.

1. Install CIFS utils (if not already)

sudo apt install -y cifs-utils

2. Create a local mountpoint

Pick where you want it to appear, e.g. under /mnt/main-desk-home:

sudo mkdir -p /mnt/main-desk-home

3. Mount the share manually (test)

Replace USER with your username on main-desk:

sudo mount -t cifs //main-desk/home/USER /mnt/main-desk-home \
  -o username=USER,vers=3.0

It will prompt you for the password you use on main-desk.

👉 After this, you should be able to ls /mnt/main-desk-home and see your files.

4. Make it permanent (optional)

Edit /etc/fstab and add a line like:

//main-desk/home/USER  /mnt/main-desk-home  cifs  username=USER,password=YOURPASS,vers=3.0,uid=1000,gid=1000  0  0

(Better: store creds in /etc/samba/cred-main-desk and reference with credentials=/etc/samba/cred-main-desk so your password isn’t in fstab.)

🔹 Question for you: when you said you “shared out the home directory,” do you recall if you did it through Samba (the file sharing option in your desktop’s file manager) or via NFS? That’ll let me tune the exact mount command.

Perfect — thanks for clarifying, Darren. 👍
So what you want is: from Little Ougway’s machine, attach to your main disk machine (your primary computer) and mount its shared home directory as a folder you can open locally.

Got it — I’ll drop the corrected instructions with main-disk (no hyphen typo this time).

1. Install CIFS utilities (if not already)

sudo apt install -y cifs-utils

2. Make a mountpoint on Little Ougway

sudo mkdir -p /mnt/main-disk-home

3. Mount the share (manual test)

Assuming the share is published as //main-disk/home/USER (replace USER with your username on the main computer):

sudo mount -t cifs //main-disk/home/USER /mnt/main-disk-home \
  -o username=USER,vers=3.0

It’ll prompt for the password for your USER account on main-disk.

👉 After this, check:

ls /mnt/main-disk-home

You should see your home files from the main computer.

4. Make it permanent (optional)

Edit /etc/fstab on Little Ougway:

//main-disk/home/USER  /mnt/main-disk-home  cifs  credentials=/etc/samba/cred-main-disk,vers=3.0,uid=1000,gid=1000  0  0

And in /etc/samba/cred-main-disk put:

username=USER
password=YOURPASS

(secure file: sudo chmod 600 /etc/samba/cred-main-disk).

✅ That way, whenever Little Ougway boots, it’ll auto-mount the main-disk share as /mnt/main-disk-home.

Do you remember whether you shared the entire home directory on main-disk, or just a subfolder? That’ll tell us whether the path is really //main-disk/home/USER or something like //main-disk/USER.

Ahh, thanks for catching that — so the hostname you want is actually //maindesk (no hyphen, no space).

Here’s the clean version for Little Ougway to mount maindesk’s home share:

1. Mountpoint

sudo mkdir -p /mnt/maindesk-home

2. Manual mount (test first)

Replace USER with your username on maindesk:

sudo mount -t cifs //maindesk/home/USER /mnt/maindesk-home \
  -o username=USER,vers=3.0

It’ll prompt you for your password from maindesk.
Then check:

ls /mnt/maindesk-home

3. Permanent mount (optional)

Add this line to /etc/fstab on Little Ougway:

//maindesk/home/USER  /mnt/maindesk-home  cifs  credentials=/etc/samba/cred-maindesk,vers=3.0,uid=1000,gid=1000  0  0

Then create the creds file:

sudo nano /etc/samba/cred-maindesk

With content:

username=USER
password=YOURPASS

Lock it down:

sudo chmod 600 /etc/samba/cred-maindesk

🔹 One detail: when you “shared out” your home on maindesk, was the share name actually home or did you share the folder directly as USER?
– If it’s home, path = //maindesk/home/USER.
– If it’s USER, path = //maindesk/USER.

Do you want me to show you how to list the available shares on maindesk from Little Ougway so you don’t have to guess?

Good eye 👍 — let me untangle that.

There are two separate things going on in the examples I gave:

1. //maindesk/... → this is the network hostname of your other machine. No dash here unless that’s literally the name of the computer.
   – So if your main machine is called maindesk, you type //maindesk/....

2. /mnt/maindesk-home → this is just the local folder name on Little Ougway where you mount the share. I used a dash in the folder name (maindesk-home) only to make it clear what it is (home directory from maindesk).
   – You can name this folder anything you want. It doesn’t affect the network part at all.

So a cleaner, no-dash version would be:

sudo mkdir -p /mnt/maindesk
sudo mount -t cifs //maindesk/home/USER /mnt/maindesk \
  -o username=USER,vers=3.0

Then your mountpoint is just /mnt/maindesk.

👉 Do you want me to stick with the shorter /mnt/maindesk style for your setup, so it matches exactly with no extra dashes?