docs: created DEVELOPMENT.md with some tips

DEVELOPMENT.md

@@ -0,0 +1,89 @@
+## Setup
+```bash
+# Clone and install
+git clone https://github.com/filecoin-project/filecoin-pin
+cd filecoin-pin
+npm install
+```
+
+## Basic Execution
+```bash
+# Run the Pinning Server
+npm run dev
+
+# Run tests
+npm test
+
+# Compile TypeScript source
+npm run build
+
+# Run the cli
+# This is the equivalent of running `filecoin-pin` if you had it installed globally (e.g., `npm install filecoin-pin -g`).
+# It's like doing `npx filecoin-pin` that isn't stuck on that version until you `run npm install filecoin-pin -g` again.
+node ./dist/cli.js
+```
+
+## Testing
+
+```bash
+npm run test             # All tests
+npm run test:unit        # Unit tests only
+npm run test:integration # Integration tests
+npm run test:browser     # Browser tests
+npm run lint:fix         # Fix formatting
+```
+
+Below are various tips and suggestions for doing development with `filecoin-pin`.
+
+## Tips
+### Debug Logging
+Prefix your `filecoin-pin` command with `LOG_LEVEL=debug`.
+
+### HTTP Tracing on the CLI
+
+If you want to see the HTTP calls and their response codes when running the `filecoin-pin` CLI, simply set `NODE_DEBUG=fetch`.
+
+For example: 
+
+```bash
+NODE_DEBUG=fetch filecoin-pin add $TMPFILE
+```
+
+This will yield log lines like:
+
+```bash
+FETCH 84357: connecting to calib2.ezpdpz.net using https:undefined
+FETCH 84357: connected to calib2.ezpdpz.net using https:h1
+FETCH 84357: sending request to POST https://calib2.ezpdpz.net//pdp/piece/uploads
+FETCH 84357: received response to POST https://calib2.ezpdpz.net//pdp/piece/uploads - HTTP 201
+FETCH 84357: trailers received from POST https://calib2.ezpdpz.net//pdp/piece/uploads
+```
+
+Note that this doesn't show headers or request/response payloads.
+
+### Running CLI changes made to `filecoin-pin` only
+
+If you want to quickly try out changes via CLI that were made in `filecoin-pin` only (i.e., not relying on unpublished changes in `synapse-sdk`):
+
+```bash
+npx tsx src/cli.ts $COMMAND
+```
+
+### Running CLI changes involving `synapse-sdk`
+
+If you want within the `filecoin-pin` CLI to try out out `synapse-sdk` changes made locally that haven't been published:
+
+```bash
+# Commands for building Synapse
+# Commands for adjusting filecoin-pin to use local Synapse 
+npx tsx src/cli.ts $COMMAND
+```
+
+### Quickly adding unique data
+
+Because of content addressing, it's valuable to upload unique data to make sure there is no deduplication in the end-to-end store and retrieval flow.  Various quick ways to do this:
+
+1. Use temp file with the date/time.  The file is small, it's very likely to be unique, and it's easy to verify in retrievals rather than random data.  
+```bash
+TMPFILE=$(mktemp) && date > $TMPFILE && filecoin-pin add $TMPFILE
+```

README.md

@@ -242,38 +242,7 @@ When `DATABASE_PATH` and `CAR_STORAGE_PATH` are not specified, data is stored in
 
 ## Development
 
-Want to contribute to Filecoin Pin or run it locally?
-
-```bash
-# Clone and install
-git clone https://github.com/filecoin-project/filecoin-pin
-cd filecoin-pin
-npm install
-
-# Run the Pinning Server
-npm run dev
-
-# Run tests
-npm test
-
-# Compile TypeScript source
-npm run build
-
-# Run the cli
-# This is the equivalent of running `filecoin-pin` if you had it installed globally (e.g., `npm install filecoin-pin -g`).
-# It's like doing `npx filecoin-pin` that isn't stuck on that version until you `run npm install filecoin-pin -g` again.
-node ./dist/cli.js
-```
-
-### Testing
-
-```bash
-npm run test             # All tests
-npm run test:unit        # Unit tests only
-npm run test:integration # Integration tests
-npm run test:browser     # Browser tests
-npm run lint:fix         # Fix formatting
-```
+See [DEVELOPMENT.md](./DEVELOPMENT.md).
 
 ## Community and Support