Remove sensitive files from tracking and sanitize examples

- Remove rsconnect/, plumber.R, notes.md from git tracking (contain
  internal server URLs, Azure Container Registry paths, IP addresses)
- Add them to .gitignore to prevent re-addition
- Replace real registry URL and username path in k8s_job_submission vignette
- Add *.Rcheck/ and *.tar.gz to .gitignore

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: mstackhouse

.gitignore

@@ -5,3 +5,8 @@
 inst/doc
 docs
 whoami
+rsconnect/
+plumber.R
+notes.md
+*.Rcheck/
+*.tar.gz

CLAUDE.md

@@ -109,6 +109,6 @@ The package interfaces with external tools via `system2()`:
 ## Notes
 
 - All test external calls are mocked via `mockery` - no real kubectl/SLURM needed to run tests
-- `rsconnect/` directory contains deployment metadata for connect-dev.atorusresearch.com (not needed for package distribution)
+- `rsconnect/` directory (gitignored) contains local Posit Connect deployment metadata
 - Root-level `plumber.R` is a production deployment file (excluded via .Rbuildignore); `inst/plumber.R` is the distributable template
 - `test_programs/` contains a simple test script used during development

notes.md

@@ -31,8 +31,8 @@ Job submission is handled by the function `abba_submit_k8s_job_local()`. This is
 
 ```{r submit_job, eval=FALSE}
 abba_submit_k8s_job_local(
-  "/home/mike.stackhouse/repos/abba/test_programs/test_program.R",
-  container = "atoruscontainers.azurecr.io/openval_4.2.1_focal:2023.09.0.02"
+  "/home/user/programs/my_program.R",
+  container = "registry.example.com/my_image:latest"
 )
 # job.batch/test-program-fbc3131d-a850-4081-8224-c06ef32821da created
 # $job_id