Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@cmd/provider/add.go`:
- Around line 76-79: The error message returned when
provider.ProviderNameRegEx.MatchString(providerName) fails contains a typo
"smaller case"; update the fmt.Errorf(...) string in that return statement to
read "lowercase" instead of "smaller case" so the message becomes: "provider
name can only include lowercase letters, numbers or dashes".
- Around line 94-96: The constructed environment variable name in the else
branch builds sourceEnvVar without an underscore before "SOURCE"; update the
expression that sets sourceEnvVar (currently using
"DEVPOD_PROVIDER_"+strings.ToUpper(providerName)+"SOURCE") to include the
missing underscore so the result is
"DEVPOD_PROVIDER_"+strings.ToUpper(providerName)+"_SOURCE", ensuring the
environment variable matches the documented DEVPOD_PROVIDER_<provider
name>_SOURCE format.

In `@cmd/provider/update.go`:
- Around line 51-52: The error message returned from the validation in
cmd/provider/update.go currently always states a source is required even though
the one-argument form (update <name>) is valid; update the fmt.Errorf call (the
return that builds the message) to mention the valid single-argument form or
clarify that either "update <name>" is allowed or "update <name> <source>" with
examples (reference the fmt.Errorf invocation in this file to locate and replace
the string).

Verify each finding against the current code and only fix it if needed.

Nitpick comments:
In `@pkg/ide/jupyter/jupyter.go`:
- Around line 44-45: Rename the misspelled type and its constructor from
JupyterNotbookServer to JupyterNotebookServer and update all local references in
this file accordingly: change the type declaration, the constructor return type
(where the function currently returns *JupyterNotbookServer), the constructor
name if it matches the type, and any method receivers or variables named
JupyterNotbookServer (references at the locations around lines 44, 53, 60, 69,
109). Ensure receiver declarations (e.g., func (s *JupyterNotbookServer) ...)
and any instantiations or type assertions are updated to the new
JupyterNotebookServer identifier so the file compiles.

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@cmd/root.go`:
- Around line 160-166: The code assumes sub.Use is non-empty and calls
strings.Fields(sub.Use)[0], which can panic; replace that with a defensive
check: split sub.Use via strings.Fields into a slice (e.g., fields :=
strings.Fields(sub.Use)) and if len(fields) > 0 use strings.ToUpper(fields[0]) +
"_" for subCommandPrefix, otherwise fall back to a safe alternative such as
strings.ToUpper(sub.Name()) + "_" (or just use commandPrefix if provided), then
call inheritCommandFlagsFromEnvironment(sub, subCommandPrefix); update the block
that computes subCommandPrefix (references: sub.Use, subCommandPrefix,
inheritCommandFlagsFromEnvironment, sub.Name()) accordingly.

---

Outside diff comments:
In `@cmd/root.go`:
- Around line 171-183: The change to require DEVPOD_<SUBCOMMAND>_<FLAG> breaks
existing DEVPOD_<FLAG> env vars; update inheritFlagsFromEnvironment to preserve
backward compatibility by checking for the legacy environment variable name
(constructed as suffix, e.g., "DEVPOD_IDE") if the prefixed name
("DEVPOD_"+commandPrefix+suffix) is not set — lookup both names and prefer the
more specific prefixed var but fall back to the legacy var; modify the logic
where environmentVariable is determined in inheritFlagsFromEnvironment and use
both names when calling os.Getenv or equivalent so subcommand flags continue to
respect existing DEVPOD_* environment variables while still supporting
DEVPOD_<SUBCOMMAND>_*.

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@cmd/provider/add.go`:
- Around line 103-106: The code currently only errors if devPodConfig.Current()
!= nil && devPodConfig.Current().Providers[cmd.FromExisting] == nil, which lets
execution continue when devPodConfig.Current() is nil; update the logic to
explicitly check for a nil current context (devPodConfig.Current() == nil) and
return a clear error (e.g., "no current devpod context") before attempting to
access Providers or calling CloneProvider, and keep the existing check that
returns "provider %s does not exist" when Current() is non-nil but
Providers[cmd.FromExisting] is nil; ensure these checks occur prior to invoking
CloneProvider or any access to Current().Providers.

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@providers/kubernetes/provider.yaml`:
- Around line 68-70: Fix the subject-verb agreement in the PVC_ACCESS_MODE
description string: change "the storage class support the given access mode" to
"the storage class supports the given access mode" so the singular subject
"storage class" matches the verb; locate the PVC_ACCESS_MODE description in
provider.yaml and update the text accordingly.

---

Outside diff comments:
In `@cmd/provider/add.go`:
- Around line 37-47: The command currently handles only a single positional
argument in RunE but silently ignores extras; update the Cobra command
definition in cmd/provider/add.go (the command struct with
Use/Short/PreRunE/RunE) to validate argument count explicitly by adding an Args
validator (e.g., cobra.MaximumNArgs(1) or a custom Args function) so any extra
positional args are rejected; ensure this validation is applied alongside the
existing PreRunE that checks cmd.FromExisting so the command fails fast when
more than one positional argument is provided.

---

Duplicate comments:
In `@cmd/provider/add.go`:
- Around line 103-106: The current guard only checks provider existence when
devPodConfig.Current() != nil, which lets execution continue when Current() is
nil; add an explicit fast-fail check for a nil current context before any
clone/provider lookups (e.g., if devPodConfig.Current() == nil return
fmt.Errorf("no current context set") ) so that the code referencing
devPodConfig.Current().Providers and cmd.FromExisting never runs against a nil
context; update the logic around the devPodConfig.Current(), Providers and
cmd.FromExisting checks to first validate the current context is non-nil and
then validate the requested provider exists.

---

Nitpick comments:
In `@cmd/provider/add.go`:
- Around line 92-97: The env var key built for provider source uses the raw
providerName (DEVPOD_PROVIDER_<NAME>_SOURCE), which breaks common shell export
syntax for dashed names; change the construction so you first normalize
providerName by replacing '-' with '_' (e.g., normalized :=
strings.ReplaceAll(providerName, "-", "_")), then build sourceEnvVar using
strings.ToUpper(normalized) and read os.Getenv(sourceEnvVar); if that lookup is
empty, fall back to the original raw-uppercased form (DEVPOD_PROVIDER_ +
strings.ToUpper(providerName) + _SOURCE) for compatibility. Update the code
around the variables providerName, sourceEnvVar and providerSource to perform
the normalize-then-fallback lookup while preserving the existing special-case
when providerName == "".